10-Q

Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended March 29, 2025

☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from             to            

Commission File Number 001-32833

TransDigm Group Incorporated

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation or organization)

41-2101738

(I.R.S. Employer Identification No.)

1350 Euclid Avenue,	Suite 1600,	Cleveland,	Ohio	44115
(Address of principal executive offices)				(Zip Code)

(216) 706-2960

(Registrant’s telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report.)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, accelerated filer, non-accelerated filer, smaller reporting company or emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer	☒	Accelerated Filer	☐
Non-Accelerated Filer	☐	Smaller Reporting Company	☐
Emerging Growth Company	☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.			☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  ☒

Securities registered pursuant to Section 12(b) of the Act:
Title of each class:	Trading Symbol:	Name of each exchange on which registered:
Common Stock, $0.01 par value	TDG	New York Stock Exchange

The number of shares outstanding of TransDigm Group Incorporated’s common stock, par value $.01 per share, was 56,167,085 as of April 30, 2025.

Table of Contents

TABLE OF CONTENTS

			Page
PART I	FINANCIAL INFORMATION		1
ITEM 1		Financial Statements	1
		Condensed Consolidated Balance Sheets – March 29, 2025 and September 30, 2024	1
		Condensed Consolidated Statements of Income – Thirteen and Twenty-Six Week Periods Ended March 29, 2025 and March 30, 2024	2
		Condensed Consolidated Statements of Comprehensive Income – Thirteen and Twenty-Six Week Periods Ended March 29, 2025 and March 30, 2024	3
		Condensed Consolidated Statements of Changes in Stockholders’ Deficit – Thirteen and Twenty-Six Week Periods Ended March 29, 2025 and March 30, 2024	4
		Condensed Consolidated Statements of Cash Flows – Twenty-Six Week Periods Ended March 29, 2025 and March 30, 2024	6
		Notes to Condensed Consolidated Financial Statements	7
ITEM 2		Management’s Discussion and Analysis of Financial Condition and Results of Operations	26
ITEM 3		Quantitative and Qualitative Disclosure About Market Risk	47
ITEM 4		Controls and Procedures	47
PART II	OTHER INFORMATION		48
ITEM 1		Legal Proceedings	48
ITEM 1A		Risk Factors	48
ITEM 2		Unregistered Sales of Equity Securities and Use of Proceeds: Purchases of Equity Securities by the Issuer	48
ITEM 5		Other Information	48
ITEM 6		Exhibits	49
SIGNATURES			50

Table of Contents

PART I: FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED BALANCE SHEETS

(Amounts in millions, except share amounts)

(Unaudited)

	March 29, 2025		September 30, 2024
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	2,426	$	6,261
Trade accounts receivable—Net	1,442		1,381
Inventories—Net	2,010		1,876
Prepaid expenses and other	530		511
Total current assets	6,408		10,029
PROPERTY, PLANT AND EQUIPMENT—NET	1,519		1,488
GOODWILL	10,355		10,419
OTHER INTANGIBLE ASSETS—NET	3,422		3,446
OTHER NON-CURRENT ASSETS	201		204
TOTAL ASSETS	$	21,905	$	25,586
LIABILITIES AND STOCKHOLDERS’ DEFICIT
CURRENT LIABILITIES:
Current portion of long-term debt	$	94	$	98
Short-term borrowings—trade receivable securitization facility	649		486
Accounts payable	319		323
Dividends payable	—		4,216
Accrued and other current liabilities	1,012		1,216
Total current liabilities	2,074		6,339
LONG-TERM DEBT	24,306		24,296
DEFERRED INCOME TAXES	761		766
OTHER NON-CURRENT LIABILITIES	428		468
Total liabilities	27,569		31,869
TD GROUP STOCKHOLDERS’ DEFICIT:
Common stock - $.01 par value; authorized 224,400,000 shares; issued 62,207,948 and 61,904,833 at March 29, 2025 and September 30, 2024, respectively	1		1
Additional paid-in capital	2,981		2,819
Accumulated deficit	(6,407)		(7,362)
Accumulated other comprehensive loss	(171)		(42)
Treasury stock, at cost; 5,984,108 and 5,688,639 shares at March 29, 2025 and September 30, 2024, respectively	(2,075)		(1,706)
Total TD Group stockholders’ deficit	(5,671)		(6,290)
NONCONTROLLING INTERESTS	7		7
Total stockholders’ deficit	(5,664)		(6,283)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$	21,905	$	25,586

See notes to condensed consolidated financial statements

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TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Amounts in millions, except per share amounts)

(Unaudited) 

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
NET SALES	$	2,150	$	1,919	$	4,156	$	3,708
COST OF SALES	876		767		1,647		1,515
GROSS PROFIT	1,274		1,152		2,509		2,193
SELLING AND ADMINISTRATIVE EXPENSES	236		248		447		467
AMORTIZATION OF INTANGIBLE ASSETS	47		37		97		72
INCOME FROM OPERATIONS	991		867		1,965		1,654
INTEREST EXPENSE—NET	378		326		756		626
REFINANCING COSTS	—		28		—		28
OTHER INCOME	(9)		(6)		(32)		(8)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	622		519		1,241		1,008
INCOME TAX PROVISION	143		115		269		222
NET INCOME	479		404		972		786
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		(1)		—		(1)
NET INCOME ATTRIBUTABLE TO TD GROUP	$	479	$	403	$	972	$	785
NET INCOME APPLICABLE TO TD GROUP COMMON STOCKHOLDERS	$	479	$	403	$	923	$	684
Earnings per share attributable to TD Group common stockholders:
Earnings per share	$	8.24	$	6.97	$	15.86	$	11.83
Cash dividends declared per common share	$	—	$	—	$	—	$	35.00
Weighted-average shares outstanding:
Basic and diluted	58.1		57.8		58.2		57.8

See notes to condensed consolidated financial statements

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TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Amounts in millions)

(Unaudited)

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Net income	$	479	$	404	$	972	$	786
Less: Net income attributable to noncontrolling interests	—		(1)		—		(1)
Net income attributable to TD Group	$	479	$	403	$	972	$	785
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	100		(60)		(127)		31
Unrealized (losses) gains on derivatives	(24)		2		(2)		(51)
Pension and post-retirement benefit plans adjustment	—		—		—		—
Other comprehensive income (loss), net of tax, attributable to TD Group	76		(58)		(129)		(20)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$	555	$	345	$	843	$	765

See notes to condensed consolidated financial statements

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TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ DEFICIT

(Amounts in millions, except share amounts)

(Unaudited)

	TD Group Stockholders
	Common Stock			Additional Paid-In Capital		Accumulated Deficit		Accumulated Other Comprehensive Loss		Treasury Stock
	Number of Shares	Par Value								Number of Shares	Value		Noncontrolling Interests		Total
BALANCE—September 30, 2023	60,995,513	$	1	$	2,440	$	(2,621)	$	(98)	(5,688,639)	$	(1,706)	$	6	$	(1,978)
Changes in noncontrolling interest of consolidated subsidiaries, net	—	—		—		—		—		—	—		1		1
Special dividends ($35.00 per share) and vested dividend equivalents	—	—		—		(2,020)		—		—	—		—		(2,020)
Accrued unvested dividend equivalents and other	—	—		—		(7)		—		—	—		—		(7)
Compensation expense recognized for employee stock options	—	—		26		—		—		—	—		—		26
Stock-based compensation activity	216,150	—		52		—		—		—	—		—		52
Net income attributable to TD Group	—	—		—		382		—		—	—		—		382
Foreign currency translation adjustment, net of tax	—	—		—		—		91		—	—		—		91
Unrealized loss on derivatives, net of tax	—	—		—		—		(53)		—	—		—		(53)
Pension and postretirement benefit plans adjustment, net of tax	—	—		—		—		—		—	—		—		—
BALANCE—December 30, 2023	61,211,663	$	1	$	2,518	$	(4,266)	$	(60)	(5,688,639)	$	(1,706)	$	7	$	(3,506)
Accrued unvested dividend equivalents and other	—	—		—		(7)		—		—	—		—		(7)
Compensation expense recognized for employee stock options	—	—		33		—		—		—	—		—		33
Stock-based compensation activity	410,748	—		113		—		—		—	—		—		113
Net income attributable to TD Group	—	—		—		403		—		—	—		—		403
Foreign currency translation adjustment, net of tax	—	—		—		—		(60)		—	—		—		(60)
Unrealized gain on derivatives, net of tax	—	—		—		—		2		—	—		—		2
Pension and postretirement benefit plans adjustment, net of tax	—	—		—		—		—		—	—		—		—
BALANCE—March 30, 2024	61,622,411	$	1	$	2,664	$	(3,870)	$	(118)	(5,688,639)	$	(1,706)	$	7	$	(3,022)

See notes to condensed consolidated financial statements

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TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ DEFICIT

(Amounts in millions, except share amounts)

(Unaudited)

	TD Group Stockholders
	Common Stock			Additional Paid-In Capital		Accumulated Deficit		Accumulated Other Comprehensive Loss		Treasury Stock
	Number of Shares	Par Value								Number of Shares	Value		Noncontrolling Interests		Total
BALANCE—September 30, 2024	61,904,833	$	1	$	2,819	$	(7,362)	$	(42)	(5,688,639)	$	(1,706)	$	7	$	(6,283)
Accrued unvested dividend equivalents and other	—	—		—		(8)		—		—	—		—		(8)
Compensation expense recognized for employee stock options	—	—		33		—		—		—	—		—		33
Stock-based compensation activity	118,080	—		35		—		—		—	—		—		35
Stock repurchases under repurchase program	—	—		—		—		—		(252,800)	(316)		—		(316)
Net income attributable to TD Group	—	—		—		493		—		—	—		—		493
Foreign currency translation adjustment, net of tax	—	—		—		—		(227)		—	—		—		(227)
Unrealized gain on derivatives, net of tax	—	—		—		—		22		—	—		—		22
Pension and postretirement benefit plans adjustment, net of tax	—	—		—		—		—		—	—		—		—
BALANCE—December 28, 2024	62,022,913	$	1	$	2,887	$	(6,877)	$	(247)	(5,941,439)	$	(2,022)	$	7	$	(6,251)
Accrued unvested dividend equivalents and other	—	—		—		(9)		—		—	—		—		(9)
Compensation expense recognized for employee stock options	—	—		39		—		—		—	—		—		39
Stock-based compensation activity	185,035	—		55		—		—		—	—		—		55
Stock repurchases under repurchase program	—	—		—		—		—		(42,669)	(53)		—		(53)
Net income attributable to TD Group	—	—		—		479		—		—	—		—		479
Foreign currency translation adjustment, net of tax	—	—		—		—		100		—	—		—		100
Unrealized loss on derivatives, net of tax	—	—		—		—		(24)		—	—		—		(24)
Pension and postretirement benefit plans adjustment, net of tax	—	—		—		—		—		—	—		—		—
BALANCE—March 29, 2025	62,207,948	$	1	$	2,981	$	(6,407)	$	(171)	(5,984,108)	$	(2,075)	$	7	$	(5,664)

See notes to condensed consolidated financial statements

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TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in millions)

(Unaudited)

	Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024
OPERATING ACTIVITIES:
Net income	$	972	$	786
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	81		71
Amortization of intangible assets and product certification costs	98		72
Amortization of debt issuance costs, original issue discount and premium	19		22
Amortization of inventory step-up	7		3
Amortization of loss contract reserves	(30)		(17)
Refinancing costs	—		28
Gain on sale of businesses, net	(19)		—
Non-cash stock and deferred compensation expense	73		111
Deferred income taxes	(2)		(1)
Foreign currency exchange (gains) losses	(10)		5
Changes in assets/liabilities, net of effects from acquisitions and sales of businesses:
Trade accounts receivable	(66)		36
Inventories	(123)		(114)
Income taxes receivable	(107)		(136)
Other assets	12		(23)
Accounts payable	(2)		(9)
Accrued interest	127		61
Accrued and other liabilities	(130)		(30)
Net cash provided by operating activities	900		865
INVESTING ACTIVITIES:
Capital expenditures	(98)		(84)
Acquisition of businesses, net of cash acquired	(140)		(87)
Other investing transactions	47		—
Net cash used in investing activities	(191)		(171)
FINANCING ACTIVITIES:
Proceeds from exercise of stock options	89		165
Dividends and dividend equivalent payments	(4,396)		(2,038)
Repurchases of common stock	(369)		—
Proceeds from issuance of senior secured notes, net	—		5,887
Repayments of senior secured notes	—		(4,400)
Proceeds from term loans, net	—		2,689
Proceeds from trade receivable securitization facility, net	163		99
Repayment on term loans	(22)		(1,730)
Financing costs and other, net	(5)		(4)
Net cash (used in) provided by financing activities	(4,540)		668
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(4)		4
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(3,835)		1,366
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	6,261		3,472
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	2,426	$	4,838
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for interest, net	$	597	$	545
Cash paid during the period for income taxes, net of refunds	$	372	$	350

See notes to condensed consolidated financial statements

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TRANSDIGM GROUP INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

TWENTY-SIX WEEK PERIODS ENDED MARCH 29, 2025 AND MARCH 30, 2024

(UNAUDITED)

1.    BASIS OF PRESENTATION

As used in this Quarterly Report on Form 10-Q, unless the context otherwise indicates, the terms “the Company,” “TD Group,” “TransDigm,” “we,” “us,” “our,” and similar references refer to TransDigm Group Incorporated and its subsidiaries.

Principles of Consolidation

The financial information included herein is unaudited; however, the information reflects all adjustments (consisting of normal recurring adjustments) that are, in the opinion of management, necessary for a fair presentation of the Company’s condensed consolidated financial statements for the interim periods presented. These financial statements and notes should be read in conjunction with the financial statements and related notes for the fiscal year ended September 30, 2024 included in TD Group’s Annual Report on Form 10-K filed on November 7, 2024. As disclosed therein, the Company’s annual consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States (“U.S. GAAP”). The September 30, 2024 condensed consolidated balance sheet was derived from TD Group’s audited financial statements. The results of operations for the twenty-six week period ended March 29, 2025 are not necessarily indicative of the results to be expected for the full year.

Reclassifications

Certain reclassifications have been made to the prior year amounts to conform to the current year presentation, none of which are material.

New Accounting Pronouncements Issued

In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” ASU 2023-07 expands disclosures about a public business entity's reportable segments and provides for more detailed information about a reportable segment's expenses. Additionally, ASU 2023-07 requires all segment profit or loss and assets disclosures to be provided on an annual and interim basis. This standard is effective for annual periods beginning after December 15, 2023 (fiscal 2025) and interim periods within fiscal years beginning one year later (fiscal 2026). The Company plans to adopt this standard beginning with our fiscal 2025 Form 10-K. While we expect the adoption of this standard will expand our disclosures within the “Segments” note, we do not expect it to have any impact on our consolidated financial statements.

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires a public business entity to disclose specific categories in its annual effective tax rate reconciliation and disaggregated information about significant reconciling items by jurisdiction and by nature. The ASU also requires entities to disclose their income tax payments (net of refunds) to international, federal, and state and local jurisdictions. The standard makes several other changes to income tax disclosure requirements. This standard is effective for annual periods beginning after December 15, 2024 (fiscal 2026), and requires prospective application with the option to apply it retrospectively. Early adoption is permitted. The Company is currently evaluating this standard to determine its impact on our disclosures.

In November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses.” Additionally, in January 2025, the FASB issued ASU 2025-01 to clarify the effective date of ASU 2024-03. The standard requires, among other items, additional disaggregated disclosures in the notes to financial statements for certain categories of expenses that are included on the face of the statement of income. The standard is effective for fiscal years beginning after December 15, 2026 (fiscal 2028), and for interim periods within fiscal years beginning after December 15, 2027 (fiscal 2029), on a retrospective or prospective basis, with early adoption permitted. The Company is currently evaluating this standard to determine its impact on our disclosures.

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2.    ACQUISITIONS

Raptor Scientific – On July 31, 2024, the Company acquired all the outstanding stock of Raptor Scientific for approximately $646 million, which includes a working capital settlement of $1 million received in the first quarter of fiscal 2025. The acquisition was financed through existing cash on hand. Raptor Scientific is a leading global manufacturer of complex test and measurement solutions primarily serving the aerospace and defense end markets. Its products are highly engineered, proprietary components with significant aftermarket content and a strong presence across major aerospace and defense platforms. The operating results of Raptor Scientific are included within TransDigm's Airframe segment.

As of March 29, 2025, the measurement period (not to exceed one year) is open; therefore, the assets acquired and liabilities assumed related to the acquisition of Raptor Scientific are subject to adjustment until the end of the respective measurement period, including those related to deferred taxes and income taxes.

The Company accounted for the acquisition of Raptor Scientific using the acquisition method of accounting and a third-party valuation appraisal and included the results of operations of the acquisition in its condensed consolidated financial statements from the effective date of the acquisition. The total purchase price was allocated to identifiable assets and liabilities based upon the respective fair value at the date of acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The fair values of acquired intangibles are determined based on an income approach, using estimates and assumptions that are deemed reasonable by the Company. Certain assumptions include the discount rates and other assumptions that form the basis of the forecasted results of the acquired business including revenue, earnings before interest, taxes, depreciation and amortization (“EBITDA”), growth rates, royalty rates and technology obsolescence rates. These assumptions are forward looking and could be affected by future economic and market conditions. Pro forma net sales and results of operations for the acquisition, had it occurred at the beginning of the twenty-six week period March 30, 2024 are not material and, accordingly, are not provided.

The allocation of the estimated fair value of assets acquired and liabilities assumed in the acquisition of Raptor Scientific as of the July 31, 2024 acquisition date, as well as measurement period adjustments recorded within the permissible one year measurement period, is summarized in the table below (in millions):

	Preliminary		Measurement Period		Adjusted Preliminary
	Allocation		Adjustments (2)		Allocation
Assets acquired (excluding cash):
Trade accounts receivable	$	9	$	—	$	9
Inventories	22		(1)		21
Prepaid expenses and other	4		—		4
Property, plant and equipment	2		—		2
Goodwill	426		(61)		365		(1)
Other intangible assets	197		67		264		(1)
Other non-current assets	5		—		5
Total assets acquired (excluding cash)	665		5		670
Liabilities assumed:
Accounts payable	1		—		1
Accrued and other current liabilities	13		3		16
Deferred income taxes	—		3		3
Other non-current liabilities	4		—		4
Total liabilities assumed	18		6		24
Net assets acquired	$	647	$	(1)	$	646

(1)Of the approximately $365 million of goodwill recognized for the acquisition, the Company expects that approximately $350 million of goodwill will be deductible for tax purposes. Of the approximately $264 million of other intangible assets recognized for the acquisition, the Company expects that approximately $251 million will be deductible for tax purposes. The goodwill and intangible assets are expected to be deductible over 15 years.

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(2)Measurement period adjustments primarily related to the adjustments in the fair values of the acquired other intangible assets from the third-party valuation. The offset to the measurement period adjustments was to goodwill.

CPI's Electron Device Business – On June 6, 2024, the Company acquired all the outstanding stock of the Electron Device Business of Communications & Power Industries (“CPI's Electron Device Business”) for approximately $1,386 million in cash, which includes a $1 million working capital settlement paid in the first quarter of fiscal 2025. The acquisition was financed through existing cash on hand. CPI’s Electron Device Business is a leading global manufacturer of electronic components and subsystems primarily serving the aerospace and defense market. Its products are highly engineered, proprietary components with significant aftermarket content and a strong presence across major aerospace and defense platforms. The operating results of CPI’s Electron Device Business are included within TransDigm's Power & Control segment.

As of March 29, 2025, the measurement period (not to exceed one year) is open; therefore, the assets acquired and liabilities assumed related to the acquisition of CPI's Electron Device Business are subject to adjustment until the end of the respective measurement period, including those related to deferred taxes and income taxes.

The Company accounted for the acquisition of CPI's Electron Device Business using the acquisition method of accounting and a third-party valuation appraisal and included the results of operations of the acquisition in its condensed consolidated financial statements from the effective date of the acquisition. The total purchase price was allocated to identifiable assets and liabilities based upon the respective fair value at the date of acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The Company utilized both the cost and market approaches to value property, plant and equipment, which consider external transactions and other comparable transactions, estimated replacement and reproduction costs, and estimated useful lives and consideration for physical, functional and economic obsolescence. The fair values of acquired intangibles are determined based on an income approach, using estimates and assumptions that are deemed reasonable by the Company. Certain assumptions include the discount rates and other assumptions that form the basis of the forecasted results of the acquired business including revenue, EBITDA, growth rates, royalty rates and technology obsolescence rates. These assumptions are forward looking and could be affected by future economic and market conditions.

Pro forma net sales and results of operations for the acquisition, had it occurred at the beginning of the twenty-six week period March 30, 2024 are not material and, accordingly, are not provided.

The allocation of the estimated fair value of assets acquired and liabilities assumed in the acquisition of CPI's Electron Device Business as of the June 6, 2024 acquisition date, as well as measurement period adjustments recorded within the permissible one year measurement period, is summarized in the table below (in millions):

	Preliminary		Measurement Period		Adjusted Preliminary
	Allocation		Adjustments (2)		Allocation
Assets acquired (excluding cash):
Trade accounts receivable	$	40	$	—	$	40
Inventories	81		(1)		80
Prepaid expenses and other	64		(1)		63
Property, plant and equipment	137		31		168
Goodwill	844		(92)		752		(1)
Other intangible assets	368		141		509		(1)
Other non-current assets	15		(14)		1
Total assets acquired (excluding cash)	1,549		64		1,613
Liabilities assumed:
Accounts payable	18		(1)		17
Accrued and other current liabilities	45		19		64
Deferred income taxes	89		55		144
Other non-current liabilities	12		(10)		2
Total liabilities assumed	164		63		227
Net assets acquired	$	1,385	$	1	$	1,386

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(1)None of the approximately $752 million of goodwill and $509 million of other intangible assets recognized for the acquisition is expected to be deductible for tax purposes.

(2)Measurement period adjustments primarily related to the adjustments in the fair values of the acquired property, plant and equipment and other intangible assets from the third-party valuation and related impact on deferred income taxes. The offset to the measurement period adjustments was to goodwill.

SEI Industries LTD – On May 21, 2024, the Company acquired all the outstanding stock of SEI Industries LTD (“SEI”) for approximately $171 million in cash, which included a working capital settlement of $1 million paid in the first quarter of fiscal 2025. The acquisition was financed through existing cash on hand. SEI, located in Delta, British Columbia, Canada, is a leading provider of highly engineered products for aerial firefighting and other liquid transportation solutions, such as remote refueling, for both the commercial and defense aerospace end markets. The products are primarily proprietary with significant aftermarket content. SEI's operating results are presented within TransDigm's Airframe segment.

As of March 29, 2025, the measurement period (not to exceed one year) is open; therefore, the assets acquired and liabilities assumed related to the acquisition of SEI are subject to adjustment until the end of the respective measurement period.

The Company accounted for the SEI acquisition using the acquisition method of accounting and a third-party valuation appraisal and included the results of operations of the acquisition in its condensed consolidated financial statements from the effective date of the acquisition. The total purchase price was allocated to identifiable assets and liabilities based upon the respective fair value at the date of acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The fair values of acquired intangibles are determined based on an income approach, using estimates and assumptions that are deemed reasonable by the Company. Certain assumptions include the discount rates and other assumptions that form the basis of the forecasted results of the acquired business including revenue, EBITDA, growth rates, royalty rates and technology obsolescence rates. These assumptions are forward looking and could be affected by future economic and market conditions.

Pro forma net sales and results of operations for the acquisition, had it occurred at the beginning of the twenty-six week period March 30, 2024 are not material and, accordingly, are not provided.

The allocation of the estimated fair value of assets acquired and liabilities assumed in the SEI acquisition as of the May 21, 2024 acquisition date, as well as measurement period adjustments recorded within the permissible one year measurement period, is summarized in the table below (in millions):

	Preliminary		Measurement Period		Adjusted Preliminary
	Allocation		Adjustments (2)		Allocation
Assets acquired (excluding cash):
Trade accounts receivable	$	2	$	2	$	4
Inventories	11		—		11
Prepaid expenses and other	—		1		1
Property, plant and equipment	1		—		1
Goodwill	109		(6)		103		(1)
Other intangible assets	68		7		75		(1)
Total assets acquired (excluding cash)	191		4		195
Liabilities assumed:
Accounts payable	1		1		2
Accrued and other current liabilities	1		—		1
Deferred income taxes	19		2		21
Total liabilities assumed	21		3		24
Net assets acquired	$	170	$	1	$	171

(1)None of the approximately $103 million of goodwill and $75 million of other intangible assets recognized for the acquisition is expected to be deductible for tax purposes.

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(2)Measurement period adjustments primarily related to the adjustments in the fair values of the acquired other intangible assets from the third-party valuation. The offset to the measurement period adjustments was to goodwill.

FPT Industries LLC – On March 1, 2024, the Company acquired all the outstanding stock of FPT Industries LLC (“FPT”) for approximately $57 million in cash. The acquisition was financed through existing cash on hand. FPT, which has facilities in the United Kingdom and Alabama, designs and manufactures an extensive range of specialist fuel tanks and flotation systems for both the commercial and defense aerospace end markets. The products are primarily proprietary with significant aftermarket content. FPT's operating results are presented within TransDigm's Airframe segment.

The Company accounted for the FPT acquisition using the acquisition method of accounting and included the results of operations of the acquisition in its condensed consolidated financial statements from the effective date of the acquisition. The total purchase price was allocated to identifiable assets and liabilities based upon the respective fair value at the date of acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. Of the approximately $35 million of goodwill recognized for the acquisition, $9 million is deductible for tax purposes over 15 years. None of the approximately $19 million of other intangible assets recognized for the acquisition is deductible for tax purposes.

Pro forma net sales and results of operations for the acquisition, had it occurred at the beginning of the twenty-six week period March 30, 2024 are not material and, accordingly, are not provided.

The fiscal 2024 acquisitions of Raptor Scientific, CPI's Electron Device Business, SEI and FPT completed by the Company strengthen and expand the Company’s position to design, produce and supply highly engineered proprietary aerospace components in niche markets with significant aftermarket content and provide opportunities to create value through the application of our three core value-driven operating strategy (obtaining profitable new business, continually improving our cost structure, and providing highly engineered value-added products to customers). The purchase prices paid reflect the current EBITDA As Defined and cash flows, as well as the future EBITDA As Defined and cash flows expected to be generated by the businesses, which are driven in most cases by the recurring aftermarket consumption over the life of a particular aircraft, estimated to be approximately 25 to 30 years.

Extant Aerospace Acquisitions – For the twenty-six week period ended March 29, 2025, the Company's Extant Aerospace subsidiary, which is included within TransDigm’s Power & Control segment, completed a series of acquisitions of substantially all of the assets and technical data rights of certain product lines, each meeting the definition of a business, for a total purchase price of $113 million. The Company accounted for the acquisitions using the acquisition method of accounting and included the results of operations of the acquisitions in its condensed consolidated financial statements from the effective date of each acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The allocation of the purchase price remains preliminary and will likely change, though not materially, in future periods up to the expiration of the respective one year measurement period as fair value estimates of the assets acquired and liabilities assumed are finalized. The Company expects that all of the approximately $43 million of goodwill and $33 million of other intangible assets recognized for the acquisitions will be deductible for tax purposes over 15 years.

For the fiscal year ended September 30, 2024, the Company's Extant Aerospace subsidiary completed a series of acquisitions of substantially all of the assets and technical data rights of certain product lines, each meeting the definition of a business, for a total purchase price of $86 million. The Company expects that all of the approximately $40 million of goodwill and $22 million of other intangible assets recognized for the acquisitions will be deductible for tax purposes over 15 years.

Pro forma net sales and results of operations for the Extant Aerospace product line acquisitions, had they occurred at the beginning of the twenty-six week periods ended March 29, 2025 or March 30, 2024 are not material and, accordingly, are not provided.

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3.    REVENUE RECOGNITION

TransDigm's sales are concentrated in the aerospace and defense industry. The Company’s customers include: distributors of aerospace components, commercial airlines, large commercial transport and regional and business aircraft original equipment manufacturers (“OEMs”), various armed forces of the U.S. and friendly foreign governments, defense OEMs, system suppliers, and various other industrial customers.

The Company recognizes revenue from contracts with customers using the five step model prescribed in ASC 606. A substantial portion of the Company's revenue is recorded at a point in time basis. Revenue is recognized from the sale of products or services when obligations under the terms of the contract are satisfied and control of promised goods or services have transferred to the customer. Control is transferred when the customer has the ability to direct the use of and obtain benefits from the goods or services. Revenue is measured at the amount of consideration the Company expects to be paid in exchange for goods or services.

In a limited number of contracts, control transfers to the customer over time, primarily in contracts where the customer is required to pay for the cost of both the finished and unfinished goods at the time of cancellation plus a reasonable profit relative to the work performed for products that were customized for the customer. Therefore, we recognize revenue over time for those agreements that have a right to margin and where the products being produced have no alternative use. 

Based on our production cycle, it is generally expected that goods related to the revenue will be shipped and billed within twelve months. For revenue recognized over time, we estimate the amount of revenue attributable to a contract earned at a given point during the production cycle based on certain costs, such as materials and labor incurred to date, plus the expected profit, which is a cost-to-cost input method.

We consider the contractual consideration payable by the customer and assess variable consideration that may affect the total transaction price. Variable consideration is included in the estimated transaction price when there is a basis to reasonably estimate the amount, including whether the estimate should be constrained in order to avoid a significant reversal of revenue in a future period. These estimates are based on historical experience, anticipated performance under the terms of the contract and our best judgment at the time.

When contracts are modified to account for changes in contract specifications and requirements, the Company considers whether the modification either creates new or changes the existing enforceable rights and obligations. Contract modifications that are for goods or services that are not distinct from the existing contract, due to the significant integration with the original good or service provided, are accounted for as if they were part of that existing contract. The effect of a contract modification to an existing contract on the transaction price and our measure of progress for the performance obligation to which it relates, is recognized as an adjustment to revenue on a cumulative catch-up basis. When the modifications include additional performance obligations that are distinct and at relative stand-alone selling price, they are accounted for as a new contract and performance obligation, which are recognized prospectively.

The Company’s payment terms vary by the type and location of the customer and the products or services offered. The Company does not offer any payment terms that would meet the requirements for consideration as a significant financing component.

Shipping and handling fees and costs incurred in connection with products sold are recorded in cost of sales in the condensed consolidated statements of income, and are not considered a performance obligation to our customers.

The Company pays sales commissions that relate to contracts for products or services that are satisfied at a point in time or over a period of one year or less and are expensed as incurred. These costs are reported as a component of selling and administrative expenses in the condensed consolidated statements of income.

We have elected to adopt the practical expedient to not disclose the aggregate amount of transaction price allocated to performance obligations that are unsatisfied as of the end of the reporting period for performance obligations that are part of a contract with an original expected duration of one year or less.

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Contract Assets and Liabilities – Contract assets reflect revenue recognized and performance obligations satisfied in advance of customer billing or reimbursable costs related to a specific contract. Contract liabilities (Deferred revenue) relate to payments received in advance of the satisfaction of performance under the contract. We receive payments from customers based on the terms established in our contracts. The following table summarizes our contract assets and liabilities balances (in millions):

	March 29, 2025		September 30, 2024
Contract assets, current (1)	$	250	$	270
Contract assets, non-current (2)	65		31
Total contract assets	315		301
Contract liabilities, current (3)	141		168
Contract liabilities, non-current (4)	8		9
Total contract liabilities	149		177
Net contract assets	$	166	$	124

(1)Included in prepaid expenses and other on the condensed consolidated balance sheets.

(2)Included in other non-current assets on the condensed consolidated balance sheets.

(3)Included in accrued and other current liabilities on the condensed consolidated balance sheets.

(4)Included in other non-current liabilities on the condensed consolidated balance sheets.

The increase in non-current contract assets is attributable to expected customer billing of certain contracts exceeding one year from March 29, 2025. For the twenty-six week period ended March 29, 2025, the revenue recognized that was included in the contract liabilities was approximately $102 million.

Refer to Note 12, “Segments,” for disclosures related to the disaggregation of revenue.

Allowance for Credit Losses – The Company's allowance for credit losses is the allowance for uncollectible accounts. The allowance for uncollectible accounts reduces the trade accounts receivable balance to the estimated net realizable value equal to the amount that is expected to be collected.

The Company’s method for developing its allowance for credit losses is based on historical write-off experience, the aging of receivables, an assessment of the creditworthiness of customers, economic conditions and other external market information and supportable forward-looking information. The allowance also incorporates a provision for the estimated impact of disputes with customers. All provisions for allowances for uncollectible accounts are included in selling and administrative expenses. The determination of the amount of the allowance for uncollectible accounts is subject to judgment and estimation by management. If circumstances change or economic conditions deteriorate or improve, the allowance for uncollectible accounts could increase or decrease.

As of March 29, 2025 and September 30, 2024, the allowance for uncollectible accounts was $31 million and $32 million, respectively. The allowance for uncollectible accounts is assessed individually at each operating unit by the operating unit’s management team.

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4.    EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per share (in millions, except per share data) using the two-class method:

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Numerator for earnings per share:
Net income	$	479	$	404	$	972	$	786
Less: Net income attributable to noncontrolling interests	—		(1)		—		(1)
Net income attributable to TD Group	479		403		972		785
Less: Dividends paid on participating securities	—		—		(49)		(101)
Net income applicable to TD Group common stockholders—basic and diluted	$	479	$	403	$	923	$	684
Denominator for basic and diluted earnings per share under the two-class method:
Weighted-average common shares outstanding	56.1		55.7		56.2		55.6
Vested options deemed participating securities	2.0		2.1		2.0		2.2
Total shares for basic and diluted earnings per share	58.1		57.8		58.2		57.8
Earnings per share—basic and diluted	$	8.24	$	6.97	$	15.86	$	11.83

5.    STOCK REPURCHASE PROGRAM

Occasionally at management's discretion, the Company repurchases its common stock in the open market, depending on prevailing market conditions, the Company's liquidity requirements, contractual restrictions and other factors. On January 27, 2022, the Board of Directors of the Company (the “Board”) authorized a new stock repurchase program to permit repurchases of its outstanding common stock not to exceed $2,200 million in the aggregate (the “$2,200 million stock repurchase program”), replacing the $650 million stock repurchase program previously authorized by the Board on November 8, 2017, subject to any restrictions specified in the Second Amended and Restated Credit Agreement dated as of June 4, 2014 (the “Credit Agreement”), and indentures governing the Company's existing Notes. There is no expiration date for this program.

During the second quarter of fiscal 2025, the Company repurchased 42,669 shares of common stock at an average price of $1,249.52 per share for a total amount of $53 million. For the twenty-six week period ended March 29, 2025, the Company repurchased 295,469 shares of common stock at an average price of $1,248.78 per share for a total amount of $369 million. The repurchased shares of common stock are classified as treasury stock in the statement of changes in stockholders' deficit. As of March 29, 2025, $919 million remains available for repurchase under the $2,200 million stock repurchase program.

Subsequent Event – April Share Repurchase Activity – In April 2025, the Company repurchased 105,567 shares of common stock at an average price of $1,240.91 per share for a total amount of $131 million.

6.    INVENTORIES

Inventories are stated at the lower of cost or net realizable value. Cost of inventories is generally determined by the average cost and the first–in, first–out (“FIFO”) methods and includes material, labor and overhead related to the manufacturing process.

Inventories consist of the following (in millions):

	March 29, 2025		September 30, 2024
Raw materials and purchased component parts	$	1,460	$	1,314
Work-in-progress	528		508
Finished goods	269		290
Total	2,257		2,112
Reserves for excess and obsolete inventory	(247)		(236)
Inventories—Net	$	2,010	$	1,876

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7.    INTANGIBLE ASSETS

Other intangible assets–net in the condensed consolidated balance sheets consist of the following (in millions):

	March 29, 2025						September 30, 2024
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Trademarks and trade names	$	1,141	$	—	$	1,141	$	1,165	$	—	$	1,165
Technology	2,573		1,061		1,512		2,510		1,003		1,507
Order backlog	48		17		31		61		13		48
Customer relationships	930		197		733		895		175		720
Other	11		6		5		12		6		6
Total	$	4,703	$	1,281	$	3,422	$	4,643	$	1,197	$	3,446

The aggregate amortization expense on identifiable intangible assets is approximately $47 million and $37 million for the thirteen week periods ended March 29, 2025 and March 30, 2024, respectively. The aggregate amortization expense on identifiable intangibles assets is approximately $97 million and $72 million for the twenty-six week periods ended March 29, 2025 and March 30, 2024, respectively.

Intangible assets acquired during the twenty-six week period ended March 29, 2025 are summarized in the table below (in millions):

	Gross Amount		Amortization Period
Intangible assets not subject to amortization:
Goodwill	$	60
Trademarks and trade names	1
	61
Intangible assets subject to amortization:
Technology	24		10 years
Order backlog	4		1 year
Customer relationships	8		10 years
	36
Total	$	97

The following is a summary of changes in the carrying value of goodwill by segment from September 30, 2024 through March 29, 2025 (in millions):

	Power & Control		Airframe		Non-aviation		Total
Balance at September 30, 2024	$	5,020	$	5,306	$	93	$	10,419
Goodwill acquired during the period	60		—		—		60
Purchase price allocation adjustments (1)	6		(61)		—		(55)
Currency translation adjustments and other	(21)		(39)		(9)		(69)
Balance at March 29, 2025	$	5,065	$	5,206	$	84	$	10,355

(1)Primarily related to the opening balance sheet adjustments recorded from the acquisition of Raptor Scientific (Airframe) completed during the fourth quarter of fiscal 2024 and CPI's Electron Device Business (Power & Control) completed during the third quarter of fiscal 2024, within the allowable measurement period (not to exceed one year). Refer to Note 2, “Acquisitions,” for further information.

The Company performs its annual impairment test for goodwill and other intangible assets as of the first day of the fourth fiscal quarter of each year, or more frequently, if events or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. We have assessed the changes in events and circumstances through the second quarter of fiscal 2025 and concluded that no triggering events occurred that required an interim test.

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8.    DEBT

The Company’s debt consists of the following (in millions):

	March 29, 2025
	Gross Amount		Debt Issuance Costs		Original Issue Discount		Net Amount
Short-term borrowings—trade receivable securitization facility	$	650	$	(1)	$	—	$	649
Term loans	$	8,680	$	(23)	$	(31)	$	8,626
5.50% senior subordinated notes due 2027 (“5.50% 2027 Notes”)	2,650		(8)		—		2,642
6.75% secured notes due 2028 (“2028 Secured Notes”)	2,100		(13)		(7)		2,080
4.625% senior subordinated notes due 2029 (“4.625% 2029 Notes”)	1,200		(5)		—		1,195
6.375% secured notes due 2029 (“2029 Secured Notes”)	2,750		(20)		(1)		2,729
4.875% senior subordinated notes due 2029 (“4.875% 2029 Notes”)	750		(4)		—		746
6.875% secured notes due 2030 (“2030 Secured Notes”)	1,450		(11)		—		1,439
7.125% secured notes due 2031 (“2031 Secured Notes”)	1,000		(8)		(6)		986
6.625% secured notes due 2032 (“2032 Secured Notes”)	2,200		(18)		—		2,182
6.00% secured notes due 2033 (“2033 Secured Notes”)	1,500		(13)		—		1,487
Government refundable advances	11		—		—		11
Finance lease obligations	277		—		—		277
	24,568		(123)		(45)		24,400
Less: current portion	94		—		—		94
Long-term debt	$	24,474	$	(123)	$	(45)	$	24,306

	September 30, 2024
	Gross Amount		Debt Issuance Costs		Original Issue Discount		Net Amount
Short-term borrowings—trade receivable securitization facility	$	487	$	(1)	$	—	$	486
Term loans	$	8,702	$	(25)	$	(35)	$	8,642
5.50% 2027 Notes	2,650		(9)		—		2,641
2028 Secured Notes	2,100		(15)		(8)		2,077
4.625% 2029 Notes	1,200		(6)		—		1,194
2029 Secured Notes	2,750		(22)		(1)		2,727
4.875% 2029 Notes	750		(4)		—		746
2030 Secured Notes	1,450		(12)		—		1,438
2031 Secured Notes	1,000		(9)		(7)		984
2032 Secured Notes	2,200		(20)		—		2,180
2033 Secured Notes	1,500		(14)		—		1,486
Government refundable advances	17		—		—		17
Finance lease obligations	262		—		—		262
	24,581		(136)		(51)		24,394
Less: current portion	99		(1)		—		98
Long-term debt	$	24,482	$	(135)	$	(51)	$	24,296

Accrued interest, which is classified as a component of accrued and other current liabilities on the condensed consolidated balance sheets, was $312 million and $185 million as of March 29, 2025 and September 30, 2024, respectively.

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Trade Receivable Securitization Facility – The Company’s trade receivable securitization facility (the “Securitization Facility”) effectively increases the Company’s borrowing capacity depending on the amount of the domestic operations’ trade accounts receivable. The Securitization Facility includes the right for the Company to exercise annual one year extensions as long as there have been no termination events as defined by the agreement. The Company uses the proceeds from the Securitization Facility as an alternative to other forms of debt, effectively reducing borrowing costs. The Securitization Facility is collateralized by substantially all of the Company’s domestic operations’ trade accounts receivable.

On July 12, 2024, the Company amended the Securitization Facility to, among other things, (i) increase the borrowing capacity from $450 million to $650 million; and (ii) extend the maturity date to July 11, 2025 at an interest rate of Term SOFR plus 1.45% compared to an interest rate of Term SOFR plus 1.60% that applied prior to the amendment. The Company drew the remaining $163 million available under the Securitization Facility in the first quarter of fiscal 2025. At March 29, 2025 and September 30, 2024, the applicable interest rate was 5.75% and 6.73%, respectively.

Government Refundable Advances – Government refundable advances consist of payments received from the Canadian government to assist in research and development related to commercial aviation. The requirement to repay this advance is based on year-over-year commercial aviation revenue growth for certain product lines at CMC Electronics, which is a wholly-owned subsidiary of TransDigm. As of March 29, 2025 and September 30, 2024, the outstanding balance of these advances was $11 million and $17 million, respectively.

Obligations under Finance Leases – The Company leases certain buildings and equipment under finance leases. The present value of the minimum finance lease payments, net of the current portion, represents a balance of $277 million and $262 million at March 29, 2025 and September 30, 2024, respectively. Refer to Note 14, “Leases,” for further disclosure of the Company's lease obligations.

9.    INCOME TAXES

At the end of each reporting period, TD Group makes an estimate of its annual effective income tax rate. The estimate used in the year-to-date period may change in subsequent periods.

During the thirteen week periods ended March 29, 2025 and March 30, 2024, the effective income tax rate was 23.0% and 22.2%, respectively. During the twenty-six week periods ended March 29, 2025 and March 30, 2024, the effective income tax rate was 21.7% and 22.0%, respectively. The Company’s higher effective income tax rate for the thirteen week period ended March 29, 2025 was primarily due to a less significant discrete benefit associated with share-based payments compared to the prior period. The Company’s lower effective income tax rate for the twenty-six week period ended March 29, 2025 was impacted by the geographic (i.e., U.S. vs. non-U.S.) mix of our pre-tax earnings. The Company’s effective income tax rate for the thirteen and twenty-six week periods ended March 29, 2025 was higher than the federal statutory tax rate of 21% primarily due to an increase in the valuation allowance applicable to the Company’s net interest deduction limitation offset by the discrete impact of excess tax benefits associated with share-based payments.

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various state, local and foreign jurisdictions. The Company is no longer subject to U.S. federal examinations for years before fiscal 2018. The Company is currently under examination for its federal income taxes in Canada for fiscal years 2013 through 2019, in France for fiscal years 2020 through 2022, and in Germany for fiscal years 2017 through 2019. In addition, the Company is subject to state income tax examinations for fiscal years 2015 and later.

Unrecognized tax benefits at March 29, 2025 and September 30, 2024, the recognition of which would have an impact on the effective tax rate for each fiscal year, amounted to $14 million. The Company classifies all income tax-related interest and penalties as income tax expense, which were not significant for the thirteen and twenty-six week periods ended March 29, 2025 and March 30, 2024. As of March 29, 2025 and September 30, 2024, the Company accrued $4 million for the potential payment of interest and penalties. Within the next twelve months, it is reasonably possible that unrecognized tax benefits could be reduced by approximately $2 million resulting primarily from the resolution of tax examinations. Any increase in the amount of unrecognized tax benefits within the next twelve months is not expected to be material.

The Organization for Economic Co-operation and Development (the “OECD”) has proposed a framework comprised of rules and models, collectively referred to as Pillar Two (“P2”), that are designed to ensure that certain multi-national enterprises pay a minimum tax rate of 15% on reported profits arising in each jurisdiction where they operate. Although the OECD provided a framework for applying the minimum tax, individual countries have and may continue to enact P2 rules that are different than the OECD framework. While we continue to monitor P2 developments, we do not anticipate that P2 will have a material impact on our financial position in either the near nor the long-term.

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10.    FAIR VALUE MEASUREMENTS

The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The following summarizes the carrying amounts and fair values of financial instruments (in millions):

		March 29, 2025				September 30, 2024
	Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	2,426	$	2,426	$	6,261	$	6,261
Interest rate swap agreements (1)	2	23		23		34		34
Interest rate cap agreements (1)	2	14		14		20		20
Foreign currency forward exchange contracts (1)	2	—		—		3		3
Interest rate collar agreements (2)	2	9		9		3		3
Liabilities:
Interest rate swap agreements (3)	2	1		1		1		1
Interest rate cap agreements (3)	2	—		—		1		1
Foreign currency forward exchange contracts (3)	2	2		2		—		—
Interest rate collar agreements (4)	2	—		—		8		8
Short-term borrowings - trade receivable securitization facility (5)	2	649		649		486		486
Long-term debt, including current portion:
Term loans (5)	2	8,626		8,664		8,642		8,694
5.50% 2027 Notes (5)	1	2,642		2,617		2,641		2,637
2028 Secured Notes (5)	1	2,080		2,129		2,077		2,160
4.625% 2029 Notes (5)	1	1,195		1,137		1,194		1,160
2029 Secured Notes (5)	1	2,729		2,778		2,727		2,836
4.875% 2029 Notes (5)	1	746		712		746		729
2030 Secured Notes (5)	1	1,439		1,483		1,438		1,519
2031 Secured Notes (5)	1	986		1,029		984		1,058
2032 Secured Notes (5)	1	2,182		2,228		2,180		2,291
2033 Secured Notes (5)	1	1,487		1,476		1,486		1,521
Government refundable advances	2	11		11		17		17
Finance lease obligations	2	277		276		262		262

(1)Included in prepaid expenses and other on the condensed consolidated balance sheets.

(2)Included in other non-current assets on the condensed consolidated balance sheets.

(3)Included in accrued and other current liabilities on the condensed consolidated balance sheets.

(4)Included in other non-current liabilities on the condensed consolidated balance sheets.

(5)The carrying amount of the debt instrument is presented net of debt issuance costs and original issue discount. Refer to Note 8, “Debt,” for gross carrying amounts.

The Company values its financial instruments using an industry standard market approach, in which prices and other relevant information are generated by market transactions involving identical or comparable assets or liabilities. No financial instruments were recognized or disclosed using unobservable inputs (i.e., Level 3).

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The Company’s derivatives consist of interest rate swap, cap and collar agreements and foreign currency exchange contracts. The fair values of the interest rate swap, cap and collar agreements were derived by taking the net present value of the expected cash flows using observable market inputs (Level 2) such as SOFR rate curves, futures, volatilities and basis spreads (when applicable). The fair values of the foreign currency exchange contracts were derived by using Level 2 inputs based on observable spot and forward exchange rates in active markets. There has not been any impact to the fair value of derivative liabilities due to the Company's own credit risk. Similarly, there has not been any material impact to the fair value of derivative assets based on the Company's evaluation of counterparties' credit risks.

The estimated fair value of the Company’s term loans was based on information provided by the agent under the Company’s Credit Agreement. The estimated fair values of the Company’s notes were based upon quoted market prices.

The fair value of cash and cash equivalents, trade accounts receivable-net and accounts payable approximated carrying value due to the short-term nature of these instruments at March 29, 2025 and September 30, 2024.

11.    DERIVATIVES AND HEDGING ACTIVITIES

The Company is exposed to, among other things, the impact of changes in foreign currency exchange rates and interest rates in the normal course of business. The Company’s risk management program is designed to manage the exposure and volatility arising from these risks, and utilizes derivative financial instruments to offset a portion of these risks. The Company uses derivative financial instruments only to the extent necessary to hedge identified business risks and does not enter into such transactions for trading purposes. The Company generally does not require collateral or other security with counterparties to these financial instruments and is therefore subject to credit risk in the event of nonperformance; however, the Company monitors credit risk and currently does not anticipate nonperformance by other parties. These derivative financial instruments do not subject the Company to undue risk, as gains and losses on these instruments generally offset gains and losses on the underlying assets, liabilities, or anticipated transactions that are being hedged. The Company has agreements with each of its swap, cap and collar counterparties that contain a provision whereby if the Company defaults on the Credit Agreement, the Company could also be declared in default on its swaps, cap and collars resulting in an acceleration of settlement under the swaps, cap and collars.

All derivative financial instruments are recorded at fair value in the condensed consolidated balance sheets. For a derivative that has not been designated as an accounting hedge, the change in the fair value is recognized immediately through earnings. For a derivative that has been designated as an accounting hedge of an existing asset or liability (a fair value hedge), the change in the fair value of both the derivative and underlying asset or liability is recognized immediately through earnings. For a derivative designated as an accounting hedge of an anticipated transaction (a cash flow hedge), the change in the fair value is recorded on the condensed consolidated balance sheets in accumulated other comprehensive loss to the extent the derivative is effective in mitigating the exposure related to the anticipated transaction. The change in the fair value related to the ineffective portion of the hedge, if any, is immediately recognized in earnings. The amount recorded within accumulated other comprehensive loss is reclassified into earnings in the same period during which the underlying hedged transaction affects earnings.

Interest Rate Swap, Cap and Collar Agreements – Interest rate swap, cap and collar agreements are used to manage interest rate risk associated with floating rate borrowings under our Credit Agreement. These agreements involve the receipt of floating rate amounts in exchange for fixed rate interest payments over the term of the agreements without an exchange of the underlying principal amount. The agreements utilized by the Company effectively modify the Company’s exposure to interest rate risk by converting a portion of the Company’s floating rate debt to a fixed rate basis from the effective date through the maturity date of the respective interest rate swap, cap and collar agreements, thereby reducing the impact of interest rate movements on future interest expense.

During the second quarter of fiscal 2023, we entered into LIBOR to Term SOFR basis interest rate swap and cap transactions to effectively convert our existing swaps and cap from LIBOR-based to Term SOFR-based. The basis swaps and cap offset the LIBOR exposure of the existing swaps and cap and effectively fix the Term SOFR rate for the notional amount. We also entered into forward starting interest rate collar agreements during the second quarter of fiscal 2023. The interest rate collar agreements establish a range where we will pay the counterparties if the three-month Term SOFR rate falls below the established floor rate of 2.00%, and the counterparties will pay us if the three-month Term SOFR rate exceeds the ceiling rate of 3.50%. The collar will settle quarterly from the effective date through the maturity date. No payments or receipts will be exchanged on the interest rate collar contracts unless interest rates rise above or fall below the contracted ceiling or floor rates.

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During the third quarter of fiscal 2024, we entered into forward starting interest rate collar agreements. The interest rate collar agreements establish a range where we will pay the counterparties if the three-month Term SOFR rate falls below the established floor rate of 2.50%, and the counterparties will pay us if the three-month Term SOFR rate exceeds the ceiling rate of 4.50%. The collar will settle quarterly from the effective date through the maturity date. No payments or receipts will be exchanged on the interest rate collar contracts unless interest rates rise above or fall below the contracted ceiling or floor rates.

The tables below summarize the key terms of the swaps, cap and collars as of March 29, 2025 (aggregated by effective date).

Interest rate swap agreements:

Aggregate Notional Amount (in millions)	Effective Date	Maturity Date	Conversion of Related Variable Rate Debt subject to Term SOFR to Fixed Rate of:
$500	3/31/2023	3/31/2025	6.25% (3.00% plus the 3.25% margin percentage)
$1,500	3/31/2023	3/31/2025	6.35% (3.10% plus the 3.25% margin percentage)
$700	3/31/2023	9/30/2025	4.55% (1.30% plus the 3.25% margin percentage)

Interest rate cap agreement:

Aggregate Notional Amount (in millions)	Effective Date	Maturity Date	Offsets Variable Rate Debt Attributable to Fluctuations Above:
$700	3/31/2023	9/30/2025	Three-month Term SOFR rate of 1.25%

Interest rate collar agreements:

Aggregate Notional Amount (in millions)	Effective Date	Maturity Date	Offsets Variable Rate Debt Attributable to Fluctuations Below and Above:
$1,100	3/31/2025	9/30/2026	Three-month Term SOFR rate of 2.00% (floor) and 3.50% (cap)
$500	9/30/2025	9/30/2026	Three-month Term SOFR rate of 2.00% (floor) and 3.50% (cap)
$1,338	9/30/2025	9/30/2027	Three-month Term SOFR rate of 2.50% (floor) and 4.50% (cap)
$1,550	9/30/2026	9/30/2027	Three-month Term SOFR rate of 2.50% (floor) and 4.50% (cap)

These derivative instruments qualify as effective cash flow hedges under U.S. GAAP. For the LIBOR to Term SOFR basis interest rate swap and cap agreements referenced above, we applied the practical expedients permissible under ASC 848 to continue hedge accounting for our existing swaps and cap as effective cash flow hedges. For our cash flow hedges, the effective portion of the gain or loss from the financial instruments is initially reported as a component of accumulated other comprehensive loss in stockholders’ deficit and subsequently reclassified into earnings in the same line as the hedged item in the same period or periods during which the hedged item affects earnings. As the interest rate swap, cap and collar agreements are used to manage interest rate risk, any gains or losses from the derivative instruments that are reclassified into earnings are recognized in interest expense-net in the condensed consolidated statements of income. Cash flows related to the derivative contracts are included in cash flows from operating activities on the condensed consolidated statements of cash flows.

Certain derivative asset and liability balances are offset where master netting agreements provide for the legal right of setoff. For classification purposes, we record the net fair value of each type of derivative position that is expected to settle in less than one year with each counterparty as a net current asset or liability and each type of long-term position as a net non-current asset or liability. The amounts shown in the table below represent the gross amounts of recognized assets and liabilities, the amounts offset in the condensed consolidated balance sheets and the net amounts of assets and liabilities presented therein (in millions):

	March 29, 2025				September 30, 2024
	Asset		Liability		Asset		Liability
Interest rate cap agreement	$	14	$	—	$	20	$	1
Interest rate collar agreements	9		—		3		8
Interest rate swap agreements	23		1		34		1
Net derivatives as classified in the condensed consolidated balance sheets (1)	$	46	$	1	$	57	$	10

(1)Refer to Note 10, “Fair Value Measurements,” for the condensed consolidated balance sheets classification of the Company's interest rate swap, cap and collar agreements.

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Based on the fair value amounts determined as of March 29, 2025, the estimated net amount of existing (gains) losses and caplet amortization expected to be reclassified into interest expense-net within the next twelve months is approximately $(12) million.

Foreign Currency Forward Exchange Contracts – The Company transacts business in various foreign currencies, which subjects the Company’s cash flows and earnings to exposure related to changes in foreign currency exchange rates. These exposures arise primarily from purchases or sales of products and services from third parties. Foreign currency forward exchange contracts provide for the purchase or sale of foreign currencies at specified future dates at specified exchange rates, and are used to offset changes in the fair value of certain assets or liabilities or forecasted cash flows resulting from transactions denominated in foreign currencies. At March 29, 2025, the Company has outstanding foreign currency forward exchange contracts to sell U.S. dollars with notional amounts of $59 million. The maximum duration of the Company’s foreign currency cash flow hedge contracts at March 29, 2025 is six months. These notional values consist of contracts for the Canadian dollar and the euro and are stated in U.S. dollar equivalents at spot exchange rates at the respective trade dates. Amounts related to foreign currency forward exchange contracts included in accumulated other comprehensive loss in stockholders' deficit are reclassified into net sales when the hedged transaction settles. As of March 29, 2025, the Company expects to record a net loss of approximately $2 million on foreign currency forward exchange contracts designated as cash flow hedges to net sales over the next twelve months.

12.    SEGMENTS

The Company’s businesses are organized and managed in three reporting segments: Power & Control, Airframe and Non-aviation. Refer to Note 15, “Segments,” in Part IV, Item 15. Exhibits and Financial Statement Schedules, of our Annual Report on Form 10-K for the fiscal year ended September 30, 2024, filed on November 7, 2024, for further information on the composition of the Company's segments.

The primary measurement used by management to review and assess the operating performance of each segment is EBITDA As Defined. The Company defines EBITDA As Defined as earnings before interest, taxes, depreciation and amortization plus certain non-operating items recorded as corporate expenses including non-cash compensation charges incurred in connection with the Company’s stock option or deferred compensation plans, foreign currency gains and losses, acquisition-integration costs, acquisition transaction-related expenses, and refinancing costs. Acquisition transaction and integration-related expenses and adjustments represent costs incurred to integrate acquired businesses into TD Group’s operations; facility relocation costs and other acquisition-related costs; transaction and valuation-related costs for acquisitions comprising deal fees, legal, financial and tax due diligence expenses; amortization expense of inventory step-up recorded in connection with the purchase accounting of acquired businesses.

EBITDA As Defined is not a measurement of financial performance under U.S. GAAP. Although the Company uses EBITDA As Defined to assess the performance of its business and for various other purposes, the use of this non-GAAP financial measure as an analytical tool has limitations, and it should not be considered in isolation or as a substitute for analysis of the Company’s results of operations as reported in accordance with U.S. GAAP.

The Company’s segments are reported on the same basis used internally for evaluating performance and for allocating resources. The accounting policies for each segment are the same as those described in the summary of significant accounting policies in the Company’s consolidated financial statements. Intersegment sales and transfers are recorded at values based on market prices, which creates intercompany profit on intersegment sales or transfers that is eliminated in consolidation. Intersegment sales were immaterial for the periods presented below. Corporate consists of our corporate offices. Corporate expenses consist primarily of compensation, benefits, professional services and other administrative costs incurred by the corporate offices. Corporate assets consist primarily of cash and cash equivalents. Corporate expenses and assets reconcile reportable segment data to the consolidated totals. An immaterial amount of corporate expenses is allocated to the operating segments.

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The following table presents net sales by reportable segment (in millions):

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Net sales to external customers
Power & Control
Commercial and non-aerospace OEM	$	238	$	203	$	433	$	382
Commercial and non-aerospace aftermarket	337		295		678		595
Defense	533		422		1,023		833
Total Power & Control	1,108		920		2,134		1,810
Airframe
Commercial and non-aerospace OEM	305		331		583		625
Commercial and non-aerospace aftermarket	356		313		690		615
Defense	341		315		676		581
Total Airframe	1,002		959		1,949		1,821
Total Non-aviation	40		40		73		77
Net Sales	$	2,150	$	1,919	$	4,156	$	3,708

The following table reconciles EBITDA As Defined by segment to consolidated income from operations before income taxes (in millions):

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
EBITDA As Defined
Power & Control	$	636	$	523	$	1,222	$	1,035
Airframe	529		510		1,045		940
Non-aviation	16		16		28		30
Total segment EBITDA As Defined	1,181		1,049		2,295		2,005
Less: Unallocated corporate EBITDA As Defined	19		28		71		72
Total Company EBITDA As Defined	1,162		1,021		2,224		1,933
Depreciation and amortization expense	89		74		179		143
Interest expense-net	378		326		756		626
Acquisition transaction and integration-related expenses	9		14		22		16
Non-cash stock and deferred compensation expense	48		60		73		111
Refinancing costs	—		28		—		28
Other, net	16		—		(47)		1
Income from continuing operations before income taxes	$	622	$	519	$	1,241	$	1,008

The following table presents total assets by segment (in millions):

	March 29, 2025		September 30, 2024
Total assets
Power & Control	$	9,462	$	9,180
Airframe	10,092		10,045
Non-aviation	190		193
Corporate	2,161		6,168
	$	21,905	$	25,586

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13.    ACCUMULATED OTHER COMPREHENSIVE LOSS

The following table presents the total changes by component in accumulated other comprehensive loss (“AOCL”), net of taxes, for the twenty-six week periods ended March 29, 2025 and March 30, 2024 (in millions):

	Unrealized gains (losses) on derivatives (1)		Pension and post-retirement benefit plans adjustment (2)		Foreign currency translation adjustment (3)		Total
Balance at September 30, 2024	$	19	$	1	$	(62)	$	(42)
Net current-period other comprehensive loss (4)	(2)		—		(127)		(129)
Balance at March 29, 2025	$	17	$	1	$	(189)	$	(171)
Balance at September 30, 2023	$	143	$	2	$	(243)	$	(98)
Net current-period other comprehensive (loss) income (4)	(51)		—		31		(20)
Balance at March 30, 2024	$	92	$	2	$	(212)	$	(118)

(1)Represents unrealized gains (losses) on derivatives designated and qualifying as cash flow hedges, net of tax (expense) benefit, of $8 million and $(1) million for the thirteen week periods ended March 29, 2025 and March 30, 2024, respectively, and $1 million and $17 million for the twenty-six week periods ended March 29, 2025 and March 30, 2024, respectively.

(2)There were no material pension liability adjustments, net of taxes, related to activity on the defined pension plan and postretirement benefit plan for the thirteen and twenty-six week periods ended March 29, 2025 and March 30, 2024.

(3)Represents gains (losses) resulting from foreign currency translation of financial statements, including gains (losses) from certain intercompany transactions, into U.S. dollars at the rates of exchange in effect at the balance sheet dates.

(4)Presented net of reclassifications out of AOCL into earnings, specifically net sales and interest expense-net, for realized (losses) gains on derivatives designated and qualifying as cash flow hedges of $(1) million (net of taxes of less than $(1) million) and $18 million (net of taxes of $6 million), respectively, for the twenty-six week period ended March 29, 2025 and $(2) million (net of taxes of $(1) million) and $55 million (net of taxes of $17 million), respectively, for the twenty-six week period ended March 30, 2024.

14.    LEASES

The Company leases certain manufacturing facilities, offices, land, equipment and vehicles. Such leases, some of which are noncancellable and, in many cases, include renewals, expire at various dates. Such options to renew are included in the lease term when it is reasonably certain that the option will be exercised. The Company’s lease agreements typically do not contain any significant residual value guarantees or restrictive covenants, and payments within certain lease agreements are adjusted periodically for changes in an index or rate.

The Company determines if an arrangement is a lease at inception. Operating lease assets and liabilities are recognized at the commencement date of the lease based on the present value of lease payments over the lease term. Lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The discount rate implicit within our leases is generally not determinable and therefore we determine the discount rate based on our incremental borrowing rate. The incremental borrowing rate for our leases is determined based on the lease term and the currency in which lease payments are made. The length of a lease term includes options to extend or terminate the lease when it is reasonably certain that the Company will exercise those options. The Company made an accounting policy election to not recognize lease assets or liabilities for leases with a term of twelve months or less. Additionally, when accounting for leases, the Company combines payments for leased assets, related services and other components of a lease.

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The components of lease expense are as follows (in millions):

		Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	Classification	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Operating lease cost	Cost of sales or selling and administrative expenses	$	6	$	5	$	12	$	10
Finance lease cost:
Amortization of leased assets	Cost of sales	3		3		7		6
Interest on lease liabilities	Interest expense-net	5		4		9		7
Total lease cost		$	14	$	12	$	28	$	23

Supplemental cash flow information related to leases is as follows (in millions):

	Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	11	$	10
Operating cash outflows from finance leases	8		6
Financing cash outflows from finance leases	4		3
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	2	$	2
Financing leases	17		65

Supplemental balance sheet information related to leases is as follows (in millions):

	Classification	March 29, 2025		September 30, 2024
Operating Leases
Operating lease right-of-use assets	Other non-current assets	$	52	$	61
Current operating lease liabilities	Accrued and other current liabilities	17		19
Long-term operating lease liabilities	Other non-current liabilities	37		43
Total operating lease liabilities		$	54	$	62
Finance Leases
Finance lease right-of-use assets, net	Property, plant and equipment-net	$	255	$	252
Current finance lease liabilities	Current portion of long-term debt	7		6
Long-term finance lease liabilities	Long-term debt	270		256
Total finance lease liabilities		$	277	$	262

As of March 29, 2025, the Company has the following remaining lease term and weighted average discount rates:

Weighted-average remaining lease term
Operating leases	5.4 years
Finance leases	20.5 years
Weighted-average discount rate
Operating leases	6.1%
Finance leases	7.0%

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Maturities of lease liabilities at March 29, 2025 are as follows (in millions):

	Operating Leases		Finance Leases
2025	$	19	$	20
2026	14		24
2027	10		24
2028	6		24
2029	4		25
Thereafter	11		445
Total future minimum lease payments	64		562
Less: imputed interest	10		285
Present value of lease liabilities reported	$	54	$	277

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-looking Statements

The following discussion of the Company’s financial condition and results of operations should be read together with TD Group’s condensed consolidated financial statements and the related notes included elsewhere in this Quarterly Report on Form 10-Q. References in this section to “TransDigm,” “the Company,” “we,” “us,” “our,” and similar references refer to TD Group, TransDigm Inc. and TransDigm Inc.’s subsidiaries, unless the context otherwise indicates.

This Quarterly Report on Form 10-Q contains both historical and “forward-looking statements” within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and 27A of the Securities Act of 1933, as amended. All statements other than statements of historical fact included that address activities, events or developments that we expect, believe or anticipate will or may occur in the future are forward-looking statements, including, in particular, the statements about our plans, objectives, strategies and prospects regarding, among other things, our financial condition, results of operations and business. We have identified some of these forward-looking statements with words like “believe,” “may,” “will,” “should,” “expect,” “intend,” “plan,” “predict,” “anticipate,” “estimate” or “continue” and other words and terms of similar meaning. These forward-looking statements may be contained throughout this Quarterly Report on Form 10-Q. These forward-looking statements are based on current expectations about future events affecting us and are subject to uncertainties and factors relating to, among other things, our operations and business environment, all of which are difficult to predict and many of which are beyond our control. Although we believe that the expectations reflected in these forward-looking statements are reasonable, we do not know whether our expectations will prove correct. They can be affected by inaccurate assumptions we might make or by known or unknown risks and uncertainties, including the risks described in Item 1A, “Risk Factors,” of the Annual Report on Form 10-K. Since our actual results, performance or achievements could differ materially from those expressed in, or implied by, these forward-looking statements, we cannot give any assurance that any of the events anticipated by these forward-looking statements will occur or, if any of them does occur, what impact they will have on our business, results of operations and financial condition. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date they are made. We do not undertake any obligation to update these forward-looking statements or the risk factors contained in this Quarterly Report on Form 10-Q to reflect new information, future events or otherwise, except as may be required under federal securities laws.

Important factors that could cause actual results to differ materially from the forward-looking statements made in this Quarterly Report on Form 10-Q include but are not limited to: the sensitivity of our business to the number of flight hours that our customers’ planes spend aloft and our customers’ profitability, both of which are affected by general economic conditions; supply chain constraints; increases in raw material costs, taxes and labor costs that cannot be recovered in product pricing; failure to complete or successfully integrate acquisitions; our indebtedness; current and future geopolitical or other worldwide events, including, without limitation, wars or conflicts and public health crises; cybersecurity threats; risks related to the transition or physical impacts of climate change and other natural disasters or meeting sustainability-related voluntary goals or regulatory requirements; our reliance on certain customers; the United States (“U.S.”) defense budget and risks associated with being a government supplier including government audits and investigations; failure to maintain government or industry approvals; risks related to changes in laws and regulations, including increases in compliance costs and potential changes in trade policies and tariffs; potential environmental liabilities; liabilities arising in connection with litigation; risks and costs associated with our international sales and operations; and other factors. Refer to Part II, Item 1A included in this Quarterly Report on Form 10-Q and to Part I, Item 1A of the Annual Report on Form 10-K for additional information regarding the foregoing factors that may affect our business.

Overview

We believe we are a leading global designer, producer and supplier of highly engineered proprietary aerospace components with significant aftermarket content. We seek to develop highly customized products to solve specific needs for aircraft operators and manufacturers. We attempt to differentiate ourselves based on engineering, service and manufacturing capabilities. We believe that our products have strong brand names within the industry and that we have a reputation for high quality, reliability and strong customer support. We believe we have achieved steady, long-term growth in sales and improvements in operating performance we believe that due to our competitive strengths and through execution of our value-driven operating strategy. More specifically, focusing our businesses on our value-driven operating strategy of obtaining profitable new business, carefully controlling the cost structure via productivity and cost improvements and pricing our highly engineered value-added products to fairly reflect the value we provide and the resources required to do so has historically resulted in improvements in gross profit and income from operations over the long-term.

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Our business is well diversified due to the broad range of products that we offer to our customers. Our major product offerings, substantially all of which are ultimately provided to end-users in the aerospace industry, include mechanical/electromechanical actuators and controls, ignition systems and engine technology, specialized pumps and valves, power conditioning devices, specialized AC/DC electric motors and generators, batteries and chargers, engineered latching and locking devices, engineered rods, engineered connectors and elastomer sealing solutions, databus and power controls, cockpit security components and systems, specialized and advanced cockpit displays, engineered audio, radio and antenna systems, specialized lavatory components, seat belts and safety restraints, engineered and customized interior surfaces and related components, advanced sensor products, switches and relay panels, thermal protection and insulation, lighting and control technology, parachutes, high performance hoists, winches and lifting devices, cargo loading, handling and delivery systems, specialized flight, wind tunnel and jet engine testing services and equipment, electronic components used in the generation, amplification, transmission and reception of microwave signals and equipment and complex testing and instrumentation solutions. Each of our product offerings is composed of many individual products that are typically customized to meet the needs of a particular aircraft platform or customer.

For the second quarter of fiscal 2025, we generated net sales of $2,150 million and net income attributable to TD Group of $479 million. EBITDA As Defined was $1,162 million, or 54.0% of net sales. Refer to the “Non-GAAP Financial Measures” section for certain information regarding EBITDA and EBITDA As Defined, including reconciliations of EBITDA and EBITDA As Defined to net income and net cash provided by operating activities.

In the first half of fiscal 2025, demand for air travel remained strong both domestically and internationally. The 2025 leading indicators or industry consensus suggest a continuation of current trends supported by continued revenue passenger kilometer (“RPK”) growth though the ongoing supply chain issues resulting in the delivery of fewer new aircraft deliveries to airlines may adversely impact the rate of RPK growth. Recent RPK statistics indicate a softening in the growth rate, particularly in North America. In the first half of fiscal 2025, commercial aftermarket sales increased compared to the first half of fiscal 2024 primarily due to the strong demand for air travel resulting in higher flight hours and utilization of aircraft as global air traffic continues to surpass pre-pandemic levels. We continue to closely monitor the economic environment, including its impact on airline capacity as several airlines have announced potential capacity reductions. At this time, we are seeing minimal impact on our commercial aftermarket.

Our commercial transport original equipment manufacturer (“OEM”) shipments and revenues generally run ahead of aircraft delivery schedules. Consistent with prior years, our fiscal 2025 shipments will be a function of, among other things, the estimated 2025 and 2026 commercial aircraft production rates for Boeing and Airbus. Airline demand for new aircraft remains high and the OEMs are working to increase aircraft production. However, aircraft production rates remain well below pre-pandemic levels as the struggles in the OEM supply chain and labor challenges persist but continue to improve. The recent tariff actions and potentially weakening economic environment, and Boeing machinist strike, which affected its 737 MAX, 767 and 777 production lines, make it difficult to accurately predict the OEM build rates for 2025, though progress continues to be made in the build rates, particularly with the 737 MAX, since the resolution of the strike in the first quarter of fiscal 2025. In the first half of fiscal 2025, the impact across TransDigm's operating units has been uneven and varied, resulting in commercial OEM sales slightly decreasing compared to the first half of fiscal 2024.

Our defense business fluctuates from year-to-year, and is dependent, to a degree, on government budget constraints, the timing of orders, macro and micro dynamics with respect to the U.S. Department of Defense (“DOD”) procurement policy and the extent of global conflicts, such as the ongoing conflicts between Russia and Ukraine and Israel and Hamas can increase demand. Likewise, delays in government spending outlays and government funding reprioritization can reduce demand. For a variety of reasons, the military spending outlook is very uncertain, though recent DOD budgets have trended upwards due to recent geopolitical challenges, such as the ongoing conflicts between Russia and Ukraine and Israel and Hamas, and current military modernization efforts. Defense sales in the first half of fiscal 2025 increased compared to the first half of fiscal 2024 primarily due to continued improving United States Government (“U.S. Government”) defense spend outlays.

Recently, the U.S. Government announced new or higher tariffs on goods imported into the U.S. from numerous countries and multiple nations countered with reciprocal tariffs and other actions in response. The U.S. Government stated that it is willing to negotiate with other countries regarding the tariffs. TransDigm is primarily a domestic manufacturer as the majority of its operations are in the U.S. and mainly sources in the U.S. for its U.S.-based production. Because of this and other factors such as the applicability of the United States-Mexico-Canada Agreement, we do not expect the tariffs to have a significant impact on our fiscal 2025 operating results. We will continue to monitor the developments on tariffs and other changes in trade policy for its potential impact on the economic environment and on our business and operating results.

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Critical Accounting Policies and Estimates

The preparation and fair presentation of the consolidated unaudited interim financial statements and accompanying notes included in this report are the responsibility of management. The financial statements and footnotes have been prepared in conformity with generally accepted accounting principles in the United States (“U.S. GAAP”) for interim financial statements and contain certain amounts that were based upon management’s best estimates, judgments and assumptions that were believed to be reasonable under the circumstances. On an ongoing basis, we evaluate the accounting policies and estimates used to prepare financial statements. Estimates are based on historical experience, judgments and assumptions believed to be reasonable under current facts and circumstances. Actual amounts and results could differ from these estimates used by management.

A comprehensive discussion of the Company’s critical accounting policies and management estimates and significant accounting policies followed in the preparation of the financial statements is included in Part II, Item 7 of our Annual Report on Form 10-K for the fiscal year ended September 30, 2024, filed on November 7, 2024. Refer to Note 1, “Basis of Presentation,” in the notes to the condensed consolidated financial statements included herein for further disclosure of accounting standards recently adopted or required to be adopted in the future.

Acquisitions

Recent acquisitions are described in Note 2, “Acquisitions,” in the notes to the condensed consolidated financial statements included herein.

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Results of Operations

The following table sets forth, for the periods indicated, certain operating data of the Company, including presentation of the amounts as a percentage of net sales (amounts in millions, except per share data):

	Thirteen Week Periods Ended
	March 29, 2025			% of Net Sales		March 30, 2024			% of Net Sales
Net sales	$	2,150		100.0	%	$	1,919		100.0	%
Cost of sales	876			40.7	%	767			40.0	%
Selling and administrative expenses	236			11.0	%	248			12.9	%
Amortization of intangible assets	47			2.2	%	37			1.9	%
Income from operations	991			46.1	%	867			45.2	%
Interest expense-net	378			17.6	%	326			17.0	%
Refinancing costs	—			—	%	28			1.5	%
Other income	(9)			(0.4)	%	(6)			(0.3)	%
Income tax provision	143			6.7	%	115			6.0	%
Income from continuing operations	479			22.3	%	404			21.1	%
Less: Net income attributable to noncontrolling interests	—			—	%	(1)			(0.1)	%
Net income attributable to TD Group	$	479		22.3	%	$	403		21.0	%
Net income applicable to TD Group common stockholders	$	479	(1)	22.3	%	$	403	(1)	21.0	%
Earnings per share attributable to TD Group common stockholders:
Basic and diluted	$	8.24	(2)			$	6.97	(2)
Weighted-average shares outstanding—basic and diluted	58.1					57.8
Other Data:
EBITDA	$	1,089	(3)			$	919	(3)
EBITDA As Defined	$	1,162	(3)	54.0	%	$	1,021	(3)	53.2	%

(1)Net income applicable to TD Group common stockholders represents net income attributable to TD Group less special dividends declared or paid on participating securities, including dividend equivalents. No special dividends were declared or paid on participating securities, including dividend equivalent payments, for the thirteen week periods ended March 29, 2025 and March 30, 2024.

(2)Earnings per share is calculated by dividing net income applicable to TD Group common stockholders by the basic and diluted weighted average common shares outstanding.

(3)Refer to “Non-GAAP Financial Measures” in this discussion and analysis for additional information and limitations regarding these non-GAAP financial measures, including a reconciliation to the comparable U.S. GAAP financial measure.

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	Twenty-Six Week Periods Ended
	March 29, 2025			% of Net Sales		March 30, 2024			% of Net Sales
Net sales	$	4,156		100.0	%	$	3,708		100.0	%
Cost of sales	1,647			39.6	%	1,515			40.9	%
Selling and administrative expenses	447			10.8	%	467			12.6	%
Amortization of intangible assets	97			2.3	%	72			1.9	%
Income from operations	1,965			47.3	%	1,654			44.6	%
Interest expense-net	756			18.2	%	626			16.9	%
Refinancing costs	—			—	%	28			0.8	%
Other income	(32)			(0.8)	%	(8)			(0.2)	%
Income tax provision	269			6.5	%	222			6.0	%
Income from continuing operations	972			23.4	%	786			21.2	%
Less: Net income attributable to noncontrolling interests	—			—	%	(1)			—	%
Net income attributable to TD Group	$	972		23.4	%	$	785		21.2	%
Net income applicable to TD Group common stockholders	$	923	(1)	22.2	%	$	684	(1)	18.4	%
Earnings per share attributable to TD Group common stockholders:
Basic and diluted	$	15.86	(2)			$	11.83	(2)
Cash dividends declared per common share	$	—				$	35.00
Weighted-average shares outstanding—basic and diluted	58.2					57.8
Other Data:
EBITDA	$	2,176	(3)			$	1,777	(3)
EBITDA As Defined	$	2,224	(3)	53.5	%	$	1,933	(3)	52.1	%

(1)Net income applicable to TD Group common stockholders represents net income attributable to TD Group less special dividends declared or paid on participating securities, including dividend equivalent payments of $49 million and $101 million for the twenty-six week periods ended March 29, 2025 and March 30, 2024, respectively.

(2)Earnings per share is calculated by dividing net income applicable to TD Group common stockholders by the basic and diluted weighted average common shares outstanding.

(3)Refer to “Non-GAAP Financial Measures” in this discussion and analysis for additional information and limitations regarding these non-GAAP financial measures, including a reconciliation to the comparable U.S. GAAP financial measure.

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Changes in Results of Operations

Thirteen week period ended March 29, 2025 compared with the thirteen week period ended March 30, 2024

Total Company

•Net Sales. Net organic sales and acquisition sales and the related dollar and percentage changes for the thirteen week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Thirteen Week Periods Ended						% Change Net Sales
	March 29, 2025		March 30, 2024		Change
Organic sales	$	2,034	$	1,902	$	132	6.9	%
Acquisition sales	116		17		99		5.1	%
Net sales	$	2,150	$	1,919	$	231	12.0	%

Organic sales represent net sales from existing businesses owned by the Company, excluding sales from acquisitions. Acquisition sales represent net sales from acquired businesses for the period up to one year from the respective acquisition date. We believe this measure provides investors with a supplemental understanding of underlying sales trends by providing sales growth on a consistent basis. Refer to Note 2, “Acquisitions,” in the notes to the condensed consolidated financial statements included herein for information on the Company's recent acquisitions.

The increase in organic sales of $132 million for the thirteen week period ended March 29, 2025 compared to the thirteen week period ended March 30, 2024 is primarily related to increases in commercial aftermarket sales ($77 million, an increase of 13.3%) and defense sales ($69 million, an increase of 9.5%), partially offset by a slight decrease in commercial OEM sales ($1 million, a decrease of 0.2%). The increase in commercial aftermarket sales is primarily attributable to the strong demand for air travel resulting in higher flight hours and utilization of aircraft. The increase in defense sales is primarily attributable to continued improving U.S. Government defense spend outlays. The slight decrease in commercial OEM sales is primarily attributable to the adverse impact on aircraft production from the Boeing machinist strike.

The increase in acquisition sales for the thirteen week period ended March 29, 2025 is primarily attributable to the fiscal 2024 acquisitions of Raptor Scientific, the Electron Device Business of Communications & Power Industries (“CPI's Electron Device Business”), SEI Industries LTD (“SEI”) and FPT Industries LLC (“FPT”).

•Cost of Sales and Gross Profit. Cost of sales increased by $109 million, or 14.2%, to $876 million for the thirteen week period ended March 29, 2025 compared to $767 million for the thirteen week period ended March 30, 2024. Cost of sales and the related percentage of net sales for the thirteen week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Thirteen Week Periods Ended
	March 29, 2025			March 30, 2024			Change		% Change
Cost of sales - excluding costs below	$	871		$	780		$	91	11.7	%
% of net sales	40.5		%	40.6		%
Foreign currency losses (gains)	10			(9)			19		211.1	%
% of net sales	0.5		%	(0.5)		%
Non-cash stock and deferred compensation expense	5			6			(1)		(16.7)	%
% of net sales	0.2		%	0.3		%
Inventory step-up amortization	1			2			(1)		(50.0)	%
% of net sales	—		%	0.1		%
Loss contract amortization	(11)			(12)			1		8.3	%
% of net sales	(0.5)		%	(0.6)		%
Total cost of sales	$	876		$	767		$	109	14.2	%
% of net sales	40.7		%	40.0		%
Gross profit (Net sales less Total cost of sales)	$	1,274		$	1,152		$	122	10.6	%
Gross profit percentage (Gross profit / Net sales)	59.3		%	60.0		%

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Cost of sales during the thirteen week period ended March 29, 2025 increased as a percentage of net sales. This was primarily driven by foreign currency losses recognized in the second quarter of fiscal 2025 as foreign exchange rates, particularly the U.S. dollar compared to the British pound and the euro, weakened in the second quarter of fiscal 2025 compared to fiscal 2024. Excluding the impact of foreign currency losses (gains), cost of sales during the thirteen week period ended March 29, 2025 slightly decreased as a percentage of net sales. This was primarily driven by the application of our three core value-driven operating strategy (obtaining profitable new business, continually improving our cost structure and providing highly engineered value-added products to customers) coupled with fixed overhead costs incurred being spread over a higher production volume.

•Selling and Administrative Expenses. Selling and administrative expenses decreased by $12 million, or 4.8%, to $236 million for the thirteen week period ended March 29, 2025, compared to $248 million, or 12.9% of net sales, for the thirteen week period ended March 30, 2024. Selling and administrative expenses and the related percentage of net sales for the thirteen week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Thirteen Week Periods Ended
	March 29, 2025			March 30, 2024			Change		% Change
Selling and administrative expenses - excluding costs below	$	188		$	184		$	4	2.2	%
% of net sales	8.7		%	9.6		%
Non-cash stock and deferred compensation expense	43			53			(10)		(18.9)	%
% of net sales	2.0		%	2.8		%
Acquisition integration costs	4			1			3		300.0	%
% of net sales	0.2		%	0.1		%
Acquisition transaction-related expenses	1			10			(9)		(90.0)	%
% of net sales	—		%	0.5		%
Total selling and administrative expenses	$	236		$	248		$	(12)	(4.8)	%
% of net sales	11.0		%	12.9		%

Selling and administrative expenses as a percentage of net sales for the thirteen week period ended March 29, 2025 decreased compared to the thirteen week period ended March 30, 2024 primarily due to the decrease in non-cash stock and deferred compensation expense and acquisition transaction-related expenses.

•Amortization of Intangible Assets. Amortization of intangible assets was $47 million for the thirteen week period ended March 29, 2025 compared to $37 million for the thirteen week period ended March 30, 2024. The increase in amortization expense of $10 million was primarily due to the amortization expense recognized on intangible assets from the fiscal 2024 acquisitions.

•Interest Expense-net. Interest expense-net includes interest on borrowings outstanding, amortization of debt issuance costs and original issue discount, revolving credit facility fees, finance leases, interest income and the impact of interest rate swaps and caps designated and qualifying as cash flow hedges. Interest expense-net increased $52 million, or 16.0%, to $378 million for the thirteen week period ended March 29, 2025 from $326 million for the comparable thirteen week period in the prior fiscal year. The increase in interest expense-net was primarily due to an increase in outstanding borrowings and a $27 million decrease in interest income. The weighted average interest rate for cash interest payments on total borrowings outstanding was 6.1% for the thirteen week period ended March 29, 2025 compared to 6.3% for the thirteen week period ended March 30, 2024.

•Refinancing Costs. No refinancing costs were incurred for the thirteen week period ended March 29, 2025. Refinancing costs of $28 million incurred for the thirteen week period ended March 30, 2024 were primarily related to the write-off of unamortized debt issuance costs recorded in conjunction with the redemption of the 6.25% secured notes due 2026 (“2026 Secured Notes”), which was completed during the thirteen week period ended March 30, 2024.

•Other Income. Other income was $9 million for the thirteen week period ended March 29, 2025 compared to $6 million for the thirteen week period ended March 30, 2024. Other income for the thirteen week period ended March 29, 2025 primarily related to royalty and other income and the non-service related components of benefit costs on the Company's benefit plans. Other income for the thirteen week period ended March 30, 2024 primarily related to royalty and other income and the non-service related components of benefit costs on the Company's benefit plans.

•Income Tax Provision. Income tax expense as a percentage of income before income taxes was approximately 23.0% for the thirteen week period ended March 29, 2025 compared to 22.2% for the thirteen week period ended March 30, 2024. The Company’s higher effective tax rate for the thirteen week period ended March 29, 2025 was primarily due to a less significant discrete benefit associated with share-based payments compared to the prior period.

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•Net Income Attributable to TD Group. Net income attributable to TD Group increased $76 million, or 18.9%, to $479 million for the thirteen week period ended March 29, 2025 compared to net income attributable to TD Group of $403 million for the thirteen week period ended March 30, 2024, primarily as a result of the factors referenced above.

•Earnings per Share. Basic and diluted earnings per share was $8.24 for the thirteen week period ended March 29, 2025 and $6.97 for the thirteen week period ended March 30, 2024.

Business Segments

•Segment Net Sales. Net sales by segment for the thirteen week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Thirteen Week Periods Ended
	March 29, 2025		% of Net Sales		March 30, 2024		% of Net Sales		Change		% Change
Power & Control	$	1,108	51.5	%	$	920	47.9	%	$	188	20.4	%
Airframe	1,002		46.6	%	959		50.0	%	43		4.5	%
Non-aviation	40		1.9	%	40		2.1	%	—		—	%
Net sales	$	2,150	100.0	%	$	1,919	100.0	%	$	231	12.0	%

Net sales for the Power & Control segment increased $188 million, an increase of 20.4%, for the thirteen week period ended March 29, 2025 compared to the thirteen week period ended March 30, 2024. The sales increase resulted primarily from increases in organic sales in defense ($55 million, an increase of 13.0%) and commercial aftermarket ($34 million, an increase of 12.1%). The increase in defense sales is primarily attributable to continued improving U.S. Government defense spend outlays. The increase in commercial aftermarket sales is primarily attributable to the strong demand for air travel resulting in higher flight hours and utilization of aircraft.

Net sales for the Airframe segment increased $43 million, an increase of 4.5%, for the thirteen week period ended March 29, 2025 compared to the thirteen week period ended March 30, 2024. The sales increase resulted primarily from increases in organic sales in commercial aftermarket ($43 million, an increase of 14.4%) and defense ($15 million, an increase of 4.7%). The increase in commercial aftermarket sales and defense sales for the Airframe segment is attributable to the same factors described in the paragraph above for the Power & Control segment.

Acquisition sales for the Power & Control and Airframe segments contributed approximately $99 million in the aggregate to the increase in net sales. Acquisition sales represent net sales from acquired businesses for the period up to one year from the respective acquisition date.

The change in Non-aviation net sales compared to the thirteen week period in the prior fiscal year was not material.

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•EBITDA As Defined. Refer to “Non-GAAP Financial Measures” in this discussion and analysis for additional information and limitations regarding these non-GAAP financial measures, including a reconciliation to the comparable U.S. GAAP financial measure. EBITDA As Defined by segment for the thirteen week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Thirteen Week Periods Ended
	March 29, 2025		% of  Segment Net Sales			March 30, 2024		% of  Segment Net Sales			Change		% Change
Power & Control	$	636	57.4	%		$	523	56.8	%		$	113	21.6	%
Airframe	529		52.8	%		510		53.2	%		19		3.7	%
Non-aviation	16		40.0	%		16		40.0	%		—		—	%
Total segment EBITDA As Defined	1,181		54.9	%		1,049		54.7	%		132		12.6	%
Less: Unallocated corporate EBITDA As Defined	19		0.9	%	(1)	28		1.5	%	(1)	(9)		(32.1)	%
Total Company EBITDA As Defined	$	1,162	54.0	%	(1)	$	1,021	53.2	%	(1)	$	141	13.8	%

(1)Calculated as a percentage of consolidated net sales.

EBITDA As Defined for the Power & Control segment increased approximately $113 million, an increase of 21.6%, resulting primarily from the higher organic sales in commercial aftermarket and defense. Also contributing to the increase in EBITDA As Defined was the application of our three core value-driven operating strategy and positive leverage on our fixed overhead costs spread over a higher production volume.

EBITDA As Defined for the Airframe segment increased approximately $19 million, an increase of 3.7%. The increase in EBITDA As Defined for the Airframe segment is attributable to the same factors described in the paragraph above for the Power & Control segment.

EBITDA As Defined from acquisitions for the Power & Control and Airframe segments contributed approximately $27 million in the aggregate to the increase in EBITDA as Defined. EBITDA As Defined from acquisitions represents EBITDA As Defined from acquired businesses for the period up to one year from the respective acquisition date.

The change in Non-aviation EBITDA As Defined compared to the thirteen week period in the prior fiscal year was not material.

Corporate expenses consist primarily of compensation, benefits, professional services and other administrative costs incurred by the corporate offices. An immaterial amount of corporate expenses is allocated to the operating segments.

Twenty-six week period ended March 29, 2025 compared with the twenty-six week period ended March 30, 2024

Total Company

•Net Sales. Net organic sales and acquisition sales and the related dollar and percentage changes for the twenty-six week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Twenty-Six Week Periods Ended						% Change Net Sales
	March 29, 2025		March 30, 2024		Change
Organic sales	$	3,927	$	3,676	$	251	6.8	%
Acquisition sales	229		32		197		5.3	%
Net sales	$	4,156	$	3,708	$	448	12.1	%

Organic sales represent net sales from existing businesses owned by the Company, excluding sales from acquisitions. Acquisition sales represent net sales from acquired businesses for the period up to one year from the respective acquisition date. We believe this measure provides investors with a supplemental understanding of underlying sales trends by providing sales growth on a consistent basis. Refer to Note 2, “Acquisitions,” in the notes to the condensed consolidated financial statements included herein for information on the Company's recent acquisitions.

The increase in organic sales of $251 million for the twenty-six week period ended March 29, 2025 compared to the twenty-six week period ended March 30, 2024 is primarily related to increases in defense sales ($149 million, an increase of 10.6%) and commercial aftermarket sales ($134 million, an increase of 11.6%), partially offset by a decrease in commercial OEM sales ($17 million, a decrease of 2.1%). The increase in defense sales is primarily attributable to continued improving U.S. Government defense spend outlays. The increase in commercial aftermarket sales is primarily attributable to the strong demand for air travel resulting in higher flight hours and utilization of aircraft. The decrease in commercial OEM sales is primarily attributable to the adverse impact on aircraft production from the Boeing machinist strike.

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The increase in acquisition sales for the twenty-six week period ended March 29, 2025 is primarily attributable to the fiscal 2024 acquisitions of Raptor Scientific, CPI's Electron Device Business, SEI and FPT.

•Cost of Sales and Gross Profit. Cost of sales increased by $132 million, or 8.7%, to $1,647 million for the twenty-six week period ended March 29, 2025 compared to $1,515 million for the twenty-six week period ended March 30, 2024. Cost of sales and the related percentage of net sales for the twenty-six week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Twenty-Six Week Periods Ended
	March 29, 2025			March 30, 2024			Change		% Change
Cost of sales - excluding costs below	$	1,668		$	1,511		$	157	10.4	%
% of net sales	40.1		%	40.7		%
Non-cash stock and deferred compensation expense	7			12			(5)		(41.7)	%
% of net sales	0.2		%	0.3		%
Inventory acquisition accounting adjustments	7			3			4		133.3	%
% of net sales	0.2		%	0.1		%
Acquisition integration costs	5			1			4		400.0	%
% of net sales	0.1		%	—		%
Foreign currency (gains) losses	(10)			5			(15)		(300.0)	%
% of net sales	(0.2)		%	0.1		%
Loss contract amortization	(30)			(17)			(13)		(76.5)	%
% of net sales	(0.7)		%	(0.5)		%
Total cost of sales	$	1,647		$	1,515		$	132	8.7	%
% of net sales	39.6		%	40.9		%
Gross profit (Net sales less Total cost of sales)	$	2,509		$	2,193		$	316	14.4	%
Gross profit percentage (Gross profit / Net sales)	60.4		%	59.1		%

Cost of sales during the twenty-six week period ended March 29, 2025 decreased as a percentage of net sales. This was primarily driven by the application of our three core value-driven operating strategy (obtaining profitable new business, continually improving our cost structure and providing highly engineered value-added products to customers) coupled with fixed overhead costs incurred being spread over a higher production volume. Foreign exchange rates, particularly the U.S. dollar compared to the British pound and the euro, strengthened in the first half of fiscal 2025 compared to fiscal 2024, resulting in foreign currency gains recognized in the first half of fiscal 2025.

•Selling and Administrative Expenses. Selling and administrative expenses increased by $20 million to $447 million, or 10.8% of net sales, for the twenty-six week period ended March 29, 2025 from $467 million, or 12.6% of net sales, for the twenty-six week period ended March 30, 2024. Selling and administrative expenses and the related percentage of net sales for the twenty-six week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Twenty-Six Week Periods Ended
	March 29, 2025			March 30, 2024			Change		% Change
Selling and administrative expenses - excluding costs below	$	372		$	355		$	17	4.8	%
% of net sales	9.0		%	9.6		%
Non-cash stock and deferred compensation expense	66			100			(34)		(34.0)	%
% of net sales	1.6		%	2.7		%
Acquisition integration costs	8			2			6		300.0	%
% of net sales	0.2		%	0.1		%
Acquisition transaction-related expenses	1			10			(9)		(90.0)	%
% of net sales	—		%	0.3		%
Total selling and administrative expenses	$	447		$	467		$	(20)	(4.3)	%
% of net sales	10.8		%	12.6		%

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Selling administrative expenses as a percentage of net sales for the twenty-six week period ended March 29, 2025 decreased compared to the twenty-six week period ended March 30, 2024 primarily due to the decrease in non-cash stock and deferred compensation expense. The decrease in non-cash stock and deferred compensation expense is primarily attributable to the appreciation of the stock price at a higher rate during the first half of fiscal 2024 compared to the first half of fiscal 2025, as the stock price is a key input used to determine the Black-Scholes fair value for the non-cash stock compensation expense, and lower deferred compensation expense.

•Amortization of Intangible Assets. Amortization of intangible assets was $97 million for the twenty-six week period ended March 29, 2025 compared to $72 million for the twenty-six week period ended March 30, 2024. The increase in amortization expense of $25 million was primarily due to the amortization expense recognized on intangible assets from the fiscal 2024 acquisitions.

•Interest Expense-net. Interest expense-net includes interest on borrowings outstanding, amortization of debt issuance costs and original issue discount, revolving credit facility fees, finance leases, interest income and the impact of interest rate swaps and caps designated and qualifying as cash flow hedges. Interest expense-net increased $130 million, or 20.8%, to $756 million for the twenty-six week period ended March 29, 2025 from $626 million for the comparable twenty-six week period in the prior fiscal year. The increase in interest expense-net was primarily due to an increase in outstanding borrowings and a $37 million decrease in interest income. The weighted average interest rate for cash interest payments on total borrowings outstanding was 6.2% for the twenty-six week period ended March 29, 2025 compared to 6.3% for the twenty-six week period ended March 30, 2024.

•Refinancing Costs. No refinancing costs were incurred for the twenty-six week period ended March 29, 2025. Refinancing costs of $28 million incurred for the twenty-six week period ended March 30, 2024 were primarily related to the write-off of unamortized debt issuance costs recorded in conjunction with the redemption of the 2026 Secured Notes, which was completed during the twenty-six week period ended March 30, 2024.

•Other Income. Other income was $32 million for the twenty-six week period ended March 29, 2025 compared to $8 million recorded for the twenty-six week period ended March 30, 2024. Other income for the twenty-six week period ended March 29, 2025 primarily related to a gain on sale of business, royalty and other income and the non-service related components of benefit costs on the Company's benefit plans. Other income for the twenty-six week period ended March 30, 2024 primarily related to royalty and other income and the non-service related components of benefit costs on the Company's benefit plans.

•Income Tax Provision. Income tax expense as a percentage of income before income taxes was approximately 21.7% for the twenty-six week period ended March 29, 2025 compared to 22.0% for the twenty-six week period ended March 30, 2024. The Company’s lower effective tax rate for the twenty-six week period ended March 29, 2025 was impacted by the geographic (i.e., U.S. vs. non-U.S.) mix of our pre-tax earnings.

•Net Income Attributable to TD Group. Net income attributable to TD Group increased $187 million, or 23.8%, to $972 million for the twenty-six week period ended March 29, 2025 compared to net income attributable to TD Group of $785 million for the twenty-six week period ended March 30, 2024, primarily as a result of the factors referenced above.

•Earnings per Share. Basic and diluted earnings per share was $15.86 for the twenty-six week period ended March 29, 2025 and $11.83 for the twenty-six week period ended March 30, 2024. Net income attributable to TD Group for the twenty-six week period ended March 29, 2025 of $972 million was decreased by dividend equivalent payments of $49 million, or $0.83 per share, resulting in net income applicable to TD Group common stockholders of $923 million. Net income attributable to TD Group for the twenty-six week period ended March 30, 2024 of $785 million was decreased by dividend equivalent payments of $101 million, or $1.75 per share, resulting in net income applicable to TD Group common stockholders of $684 million.

Business Segments

•Segment Net Sales. Net sales by segment for the twenty-six week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Twenty-Six Week Periods Ended
	March 29, 2025		% of Net Sales		March 30, 2024		% of Net Sales		Change		% Change
Power & Control	$	2,134	51.3	%	$	1,810	48.8	%	$	324	17.9	%
Airframe	1,949		46.9	%	1,821		49.1	%	128		7.0	%
Non-aviation	73		1.8	%	77		2.1	%	(4)		(5.2)	%
Net sales	$	4,156	100.0	%	$	3,708	100.0	%	$	448	12.1	%

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Net sales for the Power & Control segment increased $324 million, an increase of 17.9%, for the twenty-six week period ended March 29, 2025 compared to the twenty-six week period ended March 30, 2024. The sales increase resulted primarily from increases in organic sales in defense ($86 million, an increase of 10.3%) and commercial aftermarket ($71 million, an increase of 12.4%). The increase in defense sales is primarily attributable to continued improving U.S. Government defense spend outlays. The increase in commercial aftermarket sales is primarily attributable to the strong demand for air travel resulting in higher flight hours and utilization of aircraft.

Net sales for the Airframe segment increased $128 million, an increase of 7.0%, for the twenty-six week period ended March 29, 2025 compared to the twenty-six week period ended March 30, 2024. The sales increase resulted primarily from increases in organic sales in defense ($64 million, an increase of 11.1%) and commercial aftermarket ($63 million, an increase of 10.8%). The increase in defense sales and commercial aftermarket sales for the Airframe segment is attributable to the same factors described in the paragraph above for the Power & Control segment.

Acquisition sales for the Power & Control and Airframe segments contributed approximately $197 million in aggregate to the increase in net sales. Acquisition sales represent net sales from acquired businesses for the period up to one year from the respective acquisition date.

The change in Non-aviation net sales compared to the twenty-six week period in the prior fiscal year was not material.

•EBITDA As Defined. Refer to “Non-GAAP Financial Measures” in this discussion and analysis for additional information and limitations regarding these non-GAAP financial measures, including a reconciliation to the comparable U.S. GAAP financial measure. EBITDA As Defined by segment for the twenty-six week periods ended March 29, 2025 and March 30, 2024 were as follows (amounts in millions):

	Twenty-Six Week Periods Ended
	March 29, 2025		% of  Segment Net Sales			March 30, 2024		% of  Segment Net Sales			Change		% Change
Power & Control	$	1,222	57.3	%		$	1,035	57.2	%		$	187	18.1	%
Airframe	1,045		53.6	%		940		51.6	%		105		11.2	%
Non-aviation	28		38.4	%		30		39.0	%		(2)		(6.7)	%
Total segment EBITDA As Defined	2,295		55.2	%		2,005		54.1	%		290		14.5	%
Less: Unallocated corporate EBITDA As Defined	71		1.7	%	(1)	72		2.0	%	(1)	(1)		(1.4)	%
Total Company EBITDA As Defined	$	2,224	53.5	%	(1)	$	1,933	52.1	%	(1)	$	291	15.1	%

(1)Calculated as a percentage of consolidated net sales.

EBITDA As Defined for the Power & Control segment increased approximately $187 million, an increase of 18.1%, resulting primarily from higher organic sales in defense and commercial aftermarket. Also contributing to the increase in EBITDA As Defined was the application of our three core value-driven operating strategy and positive leverage on our fixed overhead costs spread over a higher production volume.

EBITDA As Defined for the Airframe segment increased approximately $105 million, an increase of 11.2%. The increase in EBITDA As Defined for the Airframe segment is attributable to the same factors described in the paragraph above for the Power & Control segment.

EBITDA As Defined from acquisitions for the Power & Control and Airframe segments contributed approximately $63 million in aggregate to the increase in EBITDA As Defined. EBITDA As Defined from acquisitions represents EBITDA As Defined from acquired businesses for the period up to one year from the respective acquisition date.

The change in Non-aviation EBITDA As Defined compared to the twenty-six week period in the prior fiscal year was not material.

Corporate expenses consist primarily of compensation, benefits, professional services and other administrative costs incurred by the corporate offices. An immaterial amount of corporate expenses is allocated to the operating segments.

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Liquidity and Capital Resources

We have historically maintained a capital structure comprising a mix of equity and debt financing. We vary our leverage both to optimize our equity return and to pursue acquisitions. We expect to meet our current debt obligations as they come due through internally generated funds from current levels of operations and/or through refinancing in the debt markets prior to the maturity dates of our debt.

The following tables present selected balance sheet, cash flow and other financial data relevant to the liquidity or capital resources of the Company for the periods specified below (amounts in millions):

	March 29, 2025		September 30, 2024
Selected Balance Sheet Data:
Cash and cash equivalents	$	2,426	$	6,261
Working capital (Total current assets less total current liabilities)	4,334		3,690
Total assets	21,905		25,586
Total debt (1)	25,049		24,880
TD Group stockholders’ deficit	(5,671)		(6,290)

(1)Includes debt issuance costs and original issue discount. Reference Note 8, “Debt,” in the notes to the condensed consolidated financial statements included herein for additional information.

	Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024
Selected Cash Flow and Other Financial Data:
Cash flows provided by (used in):
Operating activities	$	900	$	865
Investing activities	(191)		(171)
Financing activities	(4,540)		668
Capital expenditures	98		84
Ratio of earnings to fixed charges (1)	2.6x		2.6x

(1)For purposes of computing the ratio of earnings to fixed charges, earnings consist of income from continuing operations before income taxes plus fixed charges. Fixed charges consist of interest expense, amortization of debt issuance costs and original issue discount and the “interest component” of rental expense.

Significant Transactions of Fiscal 2025

On October 18, 2024, the Company paid the special cash dividend of $75.00 per outstanding share of common stock declared in September 2024, totaling $4,216 million, and $131 million in cash dividend equivalent payments on vested options outstanding under its stock option plans associated with the September 2024 dividend declaration.

During the first quarter of fiscal 2025, the Company repurchased 252,800 shares of common stock at an average price of $1,248.65 per share for a total amount of $316 million. During the second quarter of fiscal 2025, the Company repurchased 42,669 shares of common stock at an average price of $1,249.52 per share for a total amount of $53 million.

In April 2025, the Company repurchased 105,567 shares of common stock at an average price of $1,240.91 per share for a total amount of $131 million. Whether the Company undertakes additional share repurchases or other aforementioned activities will depend on prevailing market conditions, the Company's liquidity requirements, contractual restrictions and other factors.

* * * * *

If the Company has excess cash, it generally prioritizes allocating the excess cash in the following manner: (1) capital spending at existing businesses, (2) acquisitions of businesses, (3) payment of a special dividend and/or repurchases of our common stock and (4) prepayment of indebtedness or repurchase of debt.

The Company’s ability to make scheduled interest payments on, or to refinance, the Company’s indebtedness, or to fund non-acquisition related capital expenditures and research and development efforts, will depend on the Company’s ability to generate cash in the future. This is subject to general economic, financial, competitive, legislative, regulatory and other factors that are beyond its control.

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The Company's objective is to maintain an allocation of at least 75% fixed rate and 25% variable rate debt thereby limiting its exposure to changes in near-term interest rates. Interest rate swaps, caps and collars used to hedge and offset, respectively, the variable interest rates on our term loans are further described in Note 11, “Derivatives and Hedging Activities,” in the notes to the condensed consolidated financial statements included herein. As of March 29, 2025, approximately 75% of our gross debt was fixed rate.

As of March 29, 2025, the Company has significant cash liquidity as illustrated in the table presented below (in millions):

	As of March 29, 2025
Cash and cash equivalents	$	2,426
Availability on revolving credit facility	857
Cash liquidity	$	3,283

We believe our significant cash liquidity will allow us to meet our anticipated funding requirements. We expect to meet our short-term cash liquidity requirements (including interest obligations and capital expenditures) through net cash from operating activities, cash on hand and, if needed, draws on the revolving credit facility. Long-term cash liquidity requirements consist primarily of obligations under our long-term debt agreements. There is no maturity on any tranche of term loans or notes until November 2027.

In connection with the continued application of our three core value-driven operating strategy (obtaining profitable new business, continually improving our cost structure and providing highly engineered value-added products to customers), we expect our efforts will continue to generate strong margins and provide sufficient cash provided by operating activities to meet our interest obligations and liquidity needs. We believe our cash provided by operating activities and available borrowing capacity will enable us to make strategic business acquisitions, pay dividends to our shareholders and make opportunistic investments in our own stock, subject to any restrictions in our existing credit agreement and market conditions.

The Company may issue additional debt if prevailing market conditions are favorable to doing so. In addition, the Company may increase its borrowings in connection with acquisitions, if cash flow from operating activities becomes insufficient to fund current operations or for other short-term cash needs or for common stock repurchases or dividends. Our future leverage will also be impacted by the then current conditions of the credit markets.

Operating Activities. The Company generated $900 million of net cash from operating activities during the twenty-six week period ended March 29, 2025 compared to $865 million during the twenty-six week period ended March 30, 2024.

The change in accounts receivable during the twenty-six week period ended March 29, 2025 was a use of cash of $66 million compared to a source of cash of $36 million during the twenty-six week period ended March 30, 2024. The increase in the use of cash of $102 million is primarily attributable to the timing of cash receipts. The Company continues to actively manage its accounts receivable, the related agings and collection efforts.

The change in inventories during the twenty-six week period ended March 29, 2025 was a use of cash of $123 million compared to a use of cash of $114 million during the twenty-six week period ended March 30, 2024. The slight increase in the use of cash is due to an increase in inventory purchases to support the increase in bookings partially offset by higher sales activity. The Company continues to actively and strategically manage inventory levels in response to the ongoing supply chain challenges.

The change in accounts payable during the twenty-six week period ended March 29, 2025 was a use of cash of $2 million compared to a use of cash of $9 million during the twenty-six week period ended March 30, 2024. The change is due to the timing of payments to suppliers.

Investing Activities. Net cash used in investing activities was $191 million during the twenty-six week period ended March 29, 2025, consisting primarily of acquisitions of certain product lines completed during the first half of fiscal 2025 for $140 million and capital expenditures of $98 million; partially offset by other investing transactions inflows of $47 million.

Net cash used in investing activities was $171 million during the twenty-six week period ended March 30, 2024, consisting primarily of $87 million for the acquisition of FPT and certain product lines completed during the first half of fiscal 2024 and capital expenditures of $84 million.

Financing Activities. Net cash used in financing activities was $4,540 million during the twenty-six week period ended March 29, 2025. The use of cash was primarily attributable to dividend and dividend equivalent payments of $4,396 million and repurchases of common stock of $369 million; partially offset by an additional draw from the trade receivable securitization facility, including fees, of $163 million and proceeds from stock option exercises of $89 million.

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Net cash provided by financing activities was $668 million during the twenty-six week period ended March 30, 2024. The source of cash was primarily attributable to the net proceeds of short-term and long-term debt, including fees, of $2,545 million and proceeds from stock option exercises of $165 million. This was primarily offset by dividend and dividend equivalent payments of $2,038 million and other financing fees of $4 million.

Contractual Obligations

We have future obligations under various contracts relating to debt and interest payments, finance and operating leases, pension and post-retirement benefit plans and purchase obligations. During the twenty-six week period ended March 29, 2025, there were no material changes to these obligations as reported in our Annual Report on Form 10-K for the fiscal year ended September 30, 2024.

Description of Senior Secured Term Loans and Indentures

Senior Secured Term Loans Facilities

As of March 29, 2025, TransDigm has $8,680 million in fully drawn term loans (the “Term Loans Facility”) and a $910 million revolving credit facility. The Term Loans Facility consists of four tranches of term loans as follows (aggregate principal amount disclosed is as of March 29, 2025):

Term Loans Facility	Aggregate Principal	Maturity Date	Interest Rate
Tranche I	$1,866 million	August 24, 2028	Term SOFR plus 2.75%
Tranche J	$3,623 million	February 28, 2031	Term SOFR plus 2.50%
Tranche K	$1,695 million	March 22, 2030	Term SOFR plus 2.75%
Tranche L	$1,496 million	January 19, 2032	Term SOFR plus 2.50%

The Term Loans Facility requires quarterly aggregate principal payments of $22 million. The revolving commitments consist of two tranches which include up to $139 million of multicurrency revolving commitments. At March 29, 2025, the Company had $53 million in letters of credit outstanding and $857 million in borrowings available under the revolving commitments. Draws on the revolving commitments are subject to an interest rate of Term SOFR plus 2.25%. The unused portion of the revolving commitments is subject to a fee of 0.5% per annum. The maturity date of the revolving credit facility is February 27, 2029.

The interest rates per annum applicable to the Term Loans Facility under the Second Amended and Restated Credit Agreement dated as of June 4, 2014 (the “Credit Agreement”) are, at TransDigm’s option, equal to either an alternate base rate or an adjusted Term SOFR for one, three or six-month interest periods chosen by TransDigm, in each case plus an applicable margin percentage. The adjusted Term SOFR related to the Term Loans Facility are not subject to a floor. Refer to Note 11, “Derivatives and Hedging Activities,” in the notes to the condensed consolidated financial statements included herein for information about how our interest rate swaps, cap and collar agreements are used to hedge and offset, respectively, the variable interest rate portion of our debt.

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Indentures

The following table represents the senior subordinated and secured notes outstanding as of March 29, 2025:

Description	Aggregate Principal	Maturity Date	Interest Rate
5.50% 2027 Notes	$2,650 million	November 15, 2027	5.50%
2028 Secured Notes	$2,100 million	August 15, 2028	6.75%
4.625% 2029 Notes	$1,200 million	January 15, 2029	4.625%
2029 Secured Notes	$2,750 million	March 1, 2029	6.375%
4.875% 2029 Notes	$750 million	May 1, 2029	4.875%
2030 Secured Notes	$1,450 million	December 15, 2030	6.875%
2031 Secured Notes	$1,000 million	December 1, 2031	7.125%
2032 Secured Notes	$2,200 million	March 1, 2032	6.625%
2033 Secured Notes	$1,500 million	January 15, 2033	6.00%

The 5.50% 2027 Notes, the 4.625% 2029 Notes and the 4.875% 2029 Notes (collectively, the “Subordinated Notes”) were issued at a price of 100.00% of the principal amount. The 2030 Secured Notes, 2032 Secured Notes and 2033 Secured Notes (which, along with the 2028 Secured Notes, 2029 Secured Notes and 2031 Secured Notes, are collectively referred to as the “Secured Notes”) were issued at a price of 100.00% of its principal amount. The initial $1,000 million offering and the subsequent $1,100 million offering of the 6.75% senior secured notes due 2028 (collectively, the “2028 Secured Notes”) in the second quarter of fiscal 2023 were issued at a price of 100.00% and 99.00%, respectively, of their principal amount, resulting in gross proceeds of $2,089 million. The 2031 Secured Notes was issued in the first quarter of fiscal 2024 at a price of 99.25% of its principal amount, resulting in gross proceeds of $993 million. The initial $2,200 million offering and subsequent $550 million offering of the 6.375% senior secured notes due 2029 (collectively, the “2029 Secured Notes”) in the second quarter of fiscal 2024 were issued at a price of 100.00% and 99.75%, respectively, of their principal amount, resulting in gross proceeds of $2,749 million.

The Subordinated Notes and Secured Notes do not require principal payments prior to their maturity. Interest under the Subordinated Notes and Secured Notes are payable semi-annually. The Subordinated Notes represent our unsecured obligations ranking subordinate to our senior debt, as defined in the applicable indentures. The Secured Notes represent our secured obligations ranking equally to all existing and future senior debt, as defined in the applicable indentures. The Subordinated Notes and Secured Notes contain many of the restrictive covenants included in the Credit Agreement. TransDigm is in compliance with all of the covenants contained in the Subordinated Notes and Secured Notes.

Guarantor Information

The Subordinated Notes are subordinated to all of our existing and future senior secured debt, including indebtedness under TransDigm’s existing senior secured credit facilities, rank equally with all of our existing and future senior subordinated debt and rank senior to all of our future debt that is expressly subordinated to the Subordinated Notes. The Subordinated Notes are fully and unconditionally guaranteed on a senior subordinated unsecured basis by TD Group, TransDigm UK and TransDigm Inc.’s Domestic Restricted Subsidiaries (as defined in the applicable indentures). The table set forth in Exhibit 22.1 filed with this Form 10-Q details the primary obligors and guarantors. The guarantees of the Subordinated Notes are subordinated to all of the guarantors’ existing and future senior debt, rank equally with all of their existing and future senior subordinated debt and rank senior to all of their future debt that is expressly subordinated to the guarantees of the Subordinated Notes. The Subordinated Notes are structurally subordinated to all of the liabilities of TD Group’s non-guarantor subsidiaries.

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The Secured Notes are senior secured debt of TransDigm and rank equally in right of payment with all of TransDigm’s existing and future senior secured debt, including indebtedness under TransDigm’s existing senior secured credit facilities, and are senior in right of payment to all of TransDigm’s existing and future senior subordinated debt, including the Subordinated Notes. The 2028 Secured Notes are guaranteed on a senior secured basis by TD Group, TransDigm UK and TransDigm Inc.’s Domestic Restricted Subsidiaries (as defined in the applicable indentures). The 2029 Secured Notes, 2030 Secured Notes, 2031 Secured Notes, 2032 Secured Notes and 2033 Secured Notes are guaranteed on a senior secured basis by TD Group and each of TransDigm Inc.’s direct and indirect Restricted Subsidiaries (as defined in the applicable indenture) that is a borrower or guarantor under TransDigm’s senior secured credit facilities or that issues or guarantees any capital markets indebtedness of TransDigm Inc. or any of the guarantors in an aggregate principal amount of at least $200 million. As of the date of this Form 10-Q, the guarantors of the 2029 Secured Notes, 2030 Secured Notes, 2031 Secured Notes, 2032 Secured Notes and 2033 Secured Notes are the same as the guarantors of the 2028 Secured Notes. The table set forth in Exhibit 22.1 filed with this Form 10-Q details the primary obligors and guarantors. The guarantees of the Secured Notes rank equally in right of payment with all of the guarantors’ existing and future senior secured debt and are senior in right of payment to all of their existing and future senior subordinated debt. The Secured Notes are structurally subordinated to all of the liabilities of TransDigm’s non-guarantor subsidiaries.

Separate financial statements of TransDigm Inc. are not presented because the Subordinated Notes and Secured Notes are fully and unconditionally guaranteed on a senior subordinated unsecured basis (if Subordinated Notes) and senior secured basis (if Secured Notes) by TD Group, TransDigm UK and all of TransDigm Inc.'s Domestic Restricted Subsidiaries. TD Group has no significant operations or assets separate from its investment in TransDigm Inc.

The financial information presented is that of TD Group, TransDigm Inc. and the other Guarantors, which includes TransDigm UK, on a combined basis and the financial information of non-issuer and non-guarantor subsidiaries has been excluded. Intercompany balances and transactions between TD Group, TransDigm Inc. and the other Guarantors have been eliminated, and amounts due from, amounts due to, and transactions with non-issuer and non-guarantor subsidiaries have been presented separately.

(in millions)	As of March 29, 2025
Current assets	$	3,837
Goodwill	8,192
Other non-current assets	3,939
Current liabilities	916
Non-current liabilities	25,115
Amounts due (from) to subsidiaries that are non-issuers and non-guarantors-net	(1,868)

	Twenty-Six Week Period Ended
(in millions)	March 29, 2025
Net sales	$	3,283
Sales to subsidiaries that are non-issuers and non-guarantors	18
Cost of sales	1,282
Expense from subsidiaries that are non-issuers and non-guarantors-net	35
Income from operations	668
Net income attributable to TD Group	668

Certain Restrictive Covenants in Our Debt Documents

The Credit Agreement and the Indentures governing the Notes and Secured Notes contain restrictive covenants that, among other things, limit the incurrence of additional indebtedness, the payment of special dividends, transactions with affiliates, asset sales, acquisitions, mergers and consolidations, liens and encumbrances, and prepayments of certain other indebtedness.

The restrictive covenants included in the Credit Agreement are subject to amendments executed periodically. The most recent amendment that impacted the restrictive covenants contained in the Credit Agreement is Amendment No. 15, executed on March 22, 2024.

Under the terms of the Credit Agreement, TransDigm is entitled, on one or more occasions, to request additional term loans or additional revolving commitments to the extent that the existing or new lenders agree to provide such incremental term loans or additional revolving commitments provided that, among other conditions, our consolidated net leverage ratio would be no greater than 7.25x and the consolidated secured net debt ratio would be no greater than 5.00x, in each case, after giving effect to such incremental term loans or additional revolving commitments.

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If any such default occurs, the lenders under the Credit Agreement and the holders of the Notes and Secured Notes may elect to declare all outstanding borrowings, together with accrued interest and other amounts payable thereunder, to be immediately due and payable. The lenders under the Credit Agreement also have the right in these circumstances to terminate any commitments they have to provide further borrowings. In addition, following an event of default under the Credit Agreement, the lenders thereunder and the holders of the Secured Notes will have the right to proceed against the collateral granted to them to secure the debt, which includes our available cash, and they will also have the right to prevent us from making debt service payments on the Notes.

With the exception of the revolving credit facility, the Company has no maintenance covenants in its existing term loan and indenture agreements. Under the Credit Agreement, if the usage of the revolving credit facility exceeds 40% (or, currently, $364 million) of the total revolving commitments, the Company is required to maintain a maximum consolidated net leverage ratio of net debt to trailing four-quarter EBITDA As Defined of 7.50x (or, solely with respect to the first four fiscal quarters ending after the consummation of any material acquisition, 8.00x) as of the last day of the fiscal quarter.

As of March 29, 2025, the Company was in compliance with all of its debt covenants and expects to remain in compliance with its debt covenants in subsequent periods.

Trade Receivable Securitization Facility

During fiscal 2014, the Company established a trade receivable securitization facility (the “Securitization Facility”). The Securitization Facility effectively increases the Company’s borrowing capacity depending on the amount of the domestic operations’ trade accounts receivable. The Securitization Facility includes the right for the Company to exercise annual one year extensions as long as there have been no termination events as defined by the agreement. The Company uses the proceeds from the Securitization Facility as an alternative to other forms of debt, effectively reducing borrowing costs.

On July 12, 2024, the Company amended the Securitization Facility to, among other things, (i) increase the borrowing capacity from $450 million to $650 million; and (ii) extend the maturity date to July 11, 2025 at an interest rate of Term SOFR plus 1.45% compared to an interest rate of Term SOFR plus 1.60% that applied prior to the amendment.

During the first quarter of fiscal 2025, the Company drew the remaining $163 million available under the Securitization Facility. As of March 29, 2025, the Company has borrowed $650 million under the Securitization Facility, which is fully drawn. At March 29, 2025, the applicable interest rate was 5.75%. The Securitization Facility is collateralized by substantially all of the Company’s domestic operations’ trade accounts receivable.

Dividend and Dividend Equivalent Payments

Pursuant to the Fourth Amended and Restated TransDigm Group Incorporated 2006 Stock Incentive Plan Dividend Equivalent Plan, the Amended and Restated 2014 Stock Option Plan Dividend Equivalent Plan and the 2019 Stock Option Plan Dividend Equivalent Plan, all of the vested options granted under the existing stock option plans, except for grants to the members of the Board of Directors, are entitled to certain dividend equivalent payments in the event of the declaration of a dividend by the Company. In August 2022, all members of the Board of Directors at that time executed amendments to their option agreements resulting in the directors no longer receiving dividend equivalent payments in cash, but rather for dividends declared after June 1, 2022, dividends result in a reduction of strike price.

No dividends were declared in the first half of fiscal 2025. In September 2024, TransDigm's Board of Directors authorized and declared a special cash dividend of $75.00 on each outstanding share of common stock. On October 18, 2024, the Company paid the special cash dividend, totaling $4,216 million. Dividend equivalent payments are made during the Company's first fiscal quarter each year and also upon payment of any dividends declared. Total dividend equivalent payments in the first quarter of fiscal 2025 were approximately $180 million, $131 million of which was associated with the September 2024 special dividend declaration.

Any future declaration of special cash dividends on our common stock will be at the discretion of our Board of Directors and will depend upon our results of operations, earnings, capital requirements, financial condition, future prospects, contractual restrictions under the Credit Agreement and indentures governing the Notes, the availability of surplus under Delaware law and other factors deemed relevant by our Board of Directors. TD Group is a holding company and conducts all of its operations through direct and indirect subsidiaries. Unless TD Group receives dividends, distributions, advances, transfers of funds or other payments from our subsidiaries, TD Group will be unable to pay any dividends on our common stock in the future. The ability of any subsidiaries to take any of the foregoing actions is limited by the terms of our Term Loans Facility and indentures and may be limited by future debt or other agreements that we may enter into.

Off-Balance Sheet Arrangements

The Company utilizes letters of credit to back certain payment and performance obligations. Letters of credit are subject to limits based on amounts outstanding under the Company’s revolving credit facility. As of March 29, 2025, the Company had $53 million in letters of credit outstanding.

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Non-GAAP Financial Measures

We present below certain financial information based on our EBITDA and EBITDA As Defined. References to “EBITDA” mean earnings before interest, taxes, depreciation and amortization, and references to “EBITDA As Defined” mean EBITDA plus, as applicable for each relevant period, certain adjustments as set forth in the reconciliations of net income to EBITDA and EBITDA As Defined and the reconciliations of net cash provided by operating activities to EBITDA and EBITDA As Defined presented below.

Neither EBITDA nor EBITDA As Defined is a measurement of financial performance under U.S. GAAP. We present EBITDA and EBITDA As Defined because we believe they are useful indicators for evaluating operating performance and liquidity.

Our management believes that EBITDA and EBITDA As Defined are useful as indicators of liquidity because securities analysts, investors, rating agencies and others use EBITDA to evaluate a company’s ability to incur and service debt. In addition, EBITDA As Defined is useful to investors because the revolving credit facility under our senior secured credit facility requires compliance under certain circumstances, on a pro forma basis, with a financial covenant that measures the ratio of the amount of our secured indebtedness to the amount of our Consolidated EBITDA defined in the same manner as we define EBITDA As Defined herein.

In addition to the above, our management uses EBITDA As Defined to review and assess the performance of the management team in connection with employee incentive programs and to prepare its annual budget and financial projections. Moreover, our management uses EBITDA As Defined to evaluate acquisitions.

Although we use EBITDA and EBITDA As Defined as measures to assess the performance of our business and for the other purposes set forth above, the use of these non-GAAP financial measures as analytical tools has limitations, and you should not consider any of them in isolation, or as a substitute for analysis of our results of operations as reported in accordance with U.S. GAAP. Some of these limitations are:

•neither EBITDA nor EBITDA As Defined reflects the significant interest expense, or the cash requirements, necessary to service interest payments on our indebtedness;

•although depreciation and amortization are non-cash charges, the assets being depreciated and amortized will often have to be replaced in the future, and neither EBITDA nor EBITDA As Defined reflects any cash requirements for such replacements;

•the omission of the substantial amortization expense associated with our intangible assets further limits the usefulness of EBITDA and EBITDA As Defined;

•neither EBITDA nor EBITDA As Defined includes the payment of taxes, which is a necessary element of our operations; and

•EBITDA As Defined excludes the cash expense we have incurred to integrate acquired businesses into our operations, which is a necessary element of certain of our acquisitions.

Because of these limitations, EBITDA and EBITDA As Defined should not be considered as measures of discretionary cash available to us to invest in the growth of our business. Management compensates for these limitations by not viewing EBITDA or EBITDA As Defined in isolation and specifically by using other U.S. GAAP measures, such as net income, net sales and operating profit, to measure our operating performance. Neither EBITDA nor EBITDA As Defined is a measurement of financial performance under U.S. GAAP, and neither should be considered as an alternative to net income or cash flow from operations determined in accordance with U.S. GAAP. Our calculation of EBITDA and EBITDA As Defined may not be comparable to the calculation of similarly titled measures reported by other companies.

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The following table sets forth a reconciliation of net income to EBITDA and EBITDA As Defined (in millions):

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Net Income	$	479	$	404	$	972	$	786
Adjustments:
Depreciation and amortization expense	89		74		179		143
Interest expense-net	378		326		756		626
Income tax provision	143		115		269		222
EBITDA	1,089		919		2,176		1,777
Adjustments:
Acquisition transaction and integration-related expenses (1)	9		14		22		16
Non-cash stock and deferred compensation expense (2)	48		60		73		111
Refinancing costs (3)	—		28		—		28
Other, net (4)	16		—		(47)		1
EBITDA As Defined	$	1,162	$	1,021	$	2,224	$	1,933

(1)	Represents costs incurred to integrate acquired businesses into TD Group’s operations; facility relocation costs and other acquisition-related costs; transaction and valuation-related costs for acquisitions comprising deal fees, legal, financial and tax due diligence expenses; and amortization expense of inventory step-up recorded in connection with the purchase accounting of acquired businesses.
(2)	Represents the compensation expense recognized by TD Group under our stock option plans and deferred compensation plans.
(3)	Represents costs expensed related to debt financing activities, including new issuances, extinguishments, refinancings and amendments to existing agreements.
(4)	Primarily represents foreign currency transaction (gains) or losses, payroll withholding taxes related to dividend equivalent payments and stock option exercises, non-service related pension costs, deferred compensation payments and other miscellaneous (income) expense, such as gain on sale of business.

45

Table of Contents

The following table sets forth a reconciliation of net cash provided by operating activities to EBITDA and EBITDA As Defined (in millions):

	Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024
Net cash provided by operating activities	$	900	$	865
Adjustments:
Changes in assets and liabilities, net of effects from acquisitions and sales of businesses	289		215
Interest expense-net (1)	737		604
Income tax provision-current	271		223
Amortization of inventory step-up	(7)		(3)
Loss contract amortization	30		17
Refinancing costs (2)	—		(28)
Gain on sale of businesses, net	19		—
Non-cash stock and deferred compensation expense (3)	(73)		(111)
Foreign currency exchange gains (losses)	10		(5)
EBITDA	2,176		1,777
Adjustments:
Acquisition transaction and integration-related expenses (4)	22		16
Non-cash stock and deferred compensation expense (3)	73		111
Refinancing costs (2)	—		28
Other, net (5)	(47)		1
EBITDA As Defined	$	2,224	$	1,933

(1)	Represents interest expense, net of interest income, excluding the amortization of debt issuance costs and discount on debt.
(2)	Represents costs expensed related to debt financing activities, including new issuances, extinguishments, refinancings and amendments to existing agreements.
(3)	Represents the compensation expense recognized by TD Group under our stock option plans and deferred compensation plans.
(4)	Represents costs incurred to integrate acquired businesses into TD Group’s operations; facility relocation costs and other acquisition-related costs; transaction and valuation-related costs for acquisitions comprising deal fees, legal, financial and tax due diligence expenses; and amortization expense of inventory step-up recorded in connection with the purchase accounting of acquired businesses.
(5)	Primarily represents foreign currency transaction (gains) or losses, payroll withholding taxes related to dividend equivalent payments and stock option exercises, non-service related pension costs, deferred compensation payments and other miscellaneous (income) expense, such as gain on sale of business.

46

Table of Contents

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

The information called for by this item is provided under the caption “Description of Senior Secured Term Loans and Indentures” in Part I, Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations. Market risks are described more fully within Quantitative and Qualitative Disclosures About Market Risk in Part II, Item 7A of our most recent Annual Report on Form 10-K (for the fiscal year ended September 30, 2024, filed on November 7, 2024). These market risks have not materially changed for the second quarter of fiscal year 2025.

ITEM 4. CONTROLS AND PROCEDURES

As of March 29, 2025, TD Group carried out an evaluation, under the supervision and with the participation of TD Group’s management, including its President, Chief Executive Officer and Director (Principal Executive Officer) and Chief Financial Officer (Principal Financial Officer), of the effectiveness of the design and operation of TD Group’s disclosure controls and procedures. Based upon that evaluation, the President, Chief Executive Officer and Director and Chief Financial Officer concluded that TD Group’s disclosure controls and procedures are effective to ensure that information required to be disclosed by TD Group in the reports it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified by the Securities and Exchange Commission’s rules and forms, and that such information is accumulated and communicated to TD Group’s management, including its President, Chief Executive Officer and Director and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, TD Group’s management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management necessarily was required to apply its judgment in designing and evaluating the controls and procedures.

Changes in Internal Control over Financial Reporting

There have been no changes in the Company’s internal control over financial reporting that occurred during the fiscal quarter ended March 29, 2025, that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

47

Table of Contents

PART II: OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

The Company is involved in various claims and legal actions arising in the ordinary course of business. SEC regulations require us to disclose certain information about environmental proceedings when a governmental authority is a party to the proceedings if we reasonably believe that such proceedings may result in monetary sanctions above a stated threshold. Pursuant to such regulations, the Company uses a threshold of $1 million or more for purposes of determining whether disclosure of any such proceedings is required as we believe matters under this threshold are not material to the Company. While the Company is currently involved in certain legal proceedings, it believes the results of these proceedings will not have a material adverse effect on its financial condition, results of operations, or cash flows.

Information with respect to our legal proceedings is contained in Note 13, “Commitments and Contingencies,” in Part IV, Item 15. Exhibits and Financial Statement Schedules, of our Annual Report on Form 10-K for the fiscal year ended September 30, 2024, filed on November 7, 2024. There have been no material changes to this information.

ITEM 1A. RISK FACTORS

In addition to the other information set forth in this report, you should carefully consider the risk factors disclosed in Part I, Item 1A of our Annual Report on Form 10-K for the fiscal year ended September 30, 2024, filed on November 7, 2024. There have been no material changes to the risk factors described in the Form 10-K.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS: PURCHASES OF EQUITY SECURITIES BY THE ISSUER

The following table presents information about repurchases of TransDigm Group Inc. common stock made by us during the second quarter of fiscal year 2025 (in millions, except shares and average price per share data):

				Total Number of Shares	Dollar Value of Shares
	Total Number	Average Price		Repurchased as Part	That May Yet Be
	of Shares	Paid		of Publicly Announced	Purchased Under the
Period	Repurchased	Per Share		Plans or Programs	Plans or Programs (1)
December 29, 2024 - January 25, 2025	42,669	$	1,249.52	42,669	$	919
January 26, 2025 - February 22, 2025	—	—		—	919
February 23, 2025 - March 29, 2025	—	—		—	919
Total	42,669	$	1,249.52	42,669

(1) On January 27, 2022, our Board of Directors authorized a new stock repurchase program permitting repurchases of our outstanding shares not to exceed $2,200 million in the aggregate (the “$2,200 million stock repurchase program”), replacing the $650 million stock repurchase program, subject to any restrictions specified in the Credit Agreement and indentures governing the existing Notes. There is no expiration date for this program. Refer to Note 5, “Stock Repurchase Program” in the notes to the condensed consolidated financial statements included herein for further information.

ITEM 5. OTHER INFORMATION

On March 13, 2025, Sarah Wynne, the Company’s Chief Financial Officer, entered into a new “Rule 10b5-1 trading arrangement” (as defined in Item 408 of Regulation S-K) for the sale of 5,000 shares of common stock issuable upon the exercise of vested options intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act, which Rule 10b5-1 trading arrangement began on March 13, 2025 and terminates no later than December 31, 2025.

48

Table of Contents

ITEM 6. EXHIBITS

Exhibit No.	Description	Filed Herewith or Incorporated by Reference From
22.1	Listing of Subsidiary Guarantors	Filed Herewith
31.1	Certification by Principal Executive Officer of TransDigm Group Incorporated pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Filed Herewith
31.2	Certification by Principal Financial Officer of TransDigm Group Incorporated pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Filed Herewith
32.1	Certification by Principal Executive Officer of TransDigm Group Incorporated pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Furnished Herewith
32.2	Certification by Principal Financial Officer of TransDigm Group Incorporated pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Furnished Herewith
101.INS	Inline XBRL Instance Document: The XBRL Instance Document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document	Filed Herewith
101.SCH	Inline XBRL Taxonomy Extension Schema	Filed Herewith
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase	Filed Herewith
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase	Filed Herewith
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase	Filed Herewith
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase	Filed Herewith
104	Cover Page Interactive Data File: the cover page XBRL tags are embedded within the Inline XBRL document and are contained within Exhibit 101	Filed Herewith

49

Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

TRANSDIGM GROUP INCORPORATED

SIGNATURE	TITLE	DATE
/s/ Kevin Stein	President, Chief Executive Officer and Director (Principal Executive Officer)	May 6, 2025
Kevin Stein
/s/ Sarah Wynne	Chief Financial Officer (Principal Financial Officer)	May 6, 2025
Sarah Wynne

50

EX-22.1

Exhibit 22.1

LISTING OF SUBSIDIARY GUARANTORS

The following series of senior subordinated and secured notes issued by TransDigm Inc., a wholly owned subsidiary of TransDigm Group Incorporated, are unconditionally guaranteed, on a joint and several basis, by TransDigm Group Incorporated and each of the subsidiaries listed below under “Subsidiary Guarantors.”

Description

5.50% senior subordinated notes due 2027 (“5.50% 2027 Notes”)

6.75% senior secured notes due 2028 (“2028 Secured Notes”)

4.625% senior subordinated notes due 2029 (“4.625% 2029 Notes”)

6.375% senior secured notes due 2029 (“2029 Secured Notes”)

4.875% senior subordinated notes due 2029 (“4.875% 2029 Notes”)

6.875% senior secured notes due 2030 (“2030 Secured Notes”)

7.125% senior secured notes due 2031 (“2031 Secured Notes”)

6.625% senior secured notes due 2032 (“2032 Secured Notes”)

6.00% senior secured notes due 2033 (“2033 Secured Notes”)

Subsidiary Guarantors	Jurisdiction of Incorporation or Organization
4455 Genesee Properties, LLC	Delaware
4455 Genesee Street, LLC	Delaware
17111 Waterview Pkwy LLC	Delaware
Acme Aerospace, Inc.	Delaware
Adams Rite Aerospace, Inc.	California
AeroControlex Group, Inc.	Delaware
Aerosonic LLC	Delaware
Airborne Acquisition, Inc.	Delaware
Airborne Global, Inc.	Delaware
Airborne Holdings, Inc.	Delaware
Airborne Systems NA Inc.	Delaware
Airborne Systems North America Inc.	Delaware
Airborne Systems North America of CA Inc.	Delaware
Airborne Systems North America of NJ Inc.	New Jersey
AmSafe Global Holdings, Inc.	Delaware
AmSafe, Inc.	Delaware
Angus Electronics Co.	Delaware
Apical Industries, Inc.	California
Arkwin Industries, Inc.	New York
Armtec Countermeasures Co.	Delaware
Armtec Countermeasures TNO Co.	Delaware
Armtec Defense Products Co.	Delaware
Ashford Properties, LLC	Delaware
Auxitrol Weston USA, Inc.	Delaware
Aviation Technologies, Inc.	Delaware
Avionic Instruments LLC	Delaware
Avionics Specialties, Inc.	Virginia
AvtechTyee, Inc.	Washington
Beta Transformer Technology LLC	Delaware
Breeze-Eastern LLC	Delaware

Subsidiary Guarantors	Jurisdiction of Incorporation or Organization
Bridport Erie Aviation, Inc.	Delaware
Bridport Holdings, Inc.	Delaware
Bridport-Air Carrier, Inc.	Washington
Bruce Aerospace Inc.	Delaware
Calspan Air Facilities, LLC	New York
Calspan Air Services, LLC	New York
Calspan ASE Portugal, Inc.	Minnesota
Calspan Holdings, LLC	New York
CALSPAN JETS LLC	Delaware
Calspan Technology Acquisition LLC	Delaware
Calspan, LLC	New York
CDA InterCorp LLC	Florida
CEF Industries, LLC	Delaware
Champion Aerospace LLC	Delaware
Chelton Avionics Holdings, Inc.	Delaware
Chelton Avionics, Inc.	Delaware
Chelton Defense Products, Inc.	Delaware
CMC Electronics Aurora LLC	Delaware
CPI EDB Intermediate Holdings, Inc.	Delaware
CPI Electron Device Business, Inc.	Delaware
CTHC LLC	New York
Dart Aerospace USA, Inc.	Washington
Dart Buyer, Inc.	Delaware
Dart Helicopter Services, Inc.	Delaware
Dart Intermediate, Inc.	Delaware
Dart TopCo, Inc.	Delaware
Data Device Corporation	Delaware
Dukes Aerospace, Inc.	Delaware
Electromech Technologies LLC	Delaware
Esterline Europe Company LLC	Delaware
Esterline International Company	Delaware
Esterline Technologies Corporation	Delaware
Esterline Technologies SGIP LLC	Delaware
FPT Industries LLC	Delaware
Genesee Holdings II, LLC	New York
Genesee Holdings III, LLC	New York
Genesee Holdings, LLC	New York
HarcoSemco LLC	Connecticut
Hartwell Corporation	California
Heli Tech, Inc.	Oregon
Hytek Finishes Co.	Delaware
Iceman Holdco, Inc.	Delaware
ILC Holdings, Inc.	Delaware
Janco Corporation	California

Subsidiary Guarantors	Jurisdiction of Incorporation or Organization
Johnson Liverpool LLC	Delaware
King Nutronics, LLC	Delaware
Kirkhill Inc.	Delaware
Korry Electronics Co.	Delaware
Leach Holding Corporation	Delaware
Leach International Corporation	Delaware
Leach Mexico Holding LLC	Delaware
Leach Technology Group, Inc.	Delaware
MarathonNorco Aerospace, Inc.	Delaware
Mason Electric Co.	Delaware
McKechnie Aerospace DE, Inc.	Delaware
McKechnie Aerospace Holdings, Inc.	Delaware
McKechnie Aerospace US LLC	Delaware
Medtherm Labs, LLC	Delaware
Microwave Power Products, Inc.	Delaware
NAT Seattle Inc.	Delaware
NMC Group, Inc.	California
Nordisk Aviation Products LLC	Delaware
North Hills Signal Processing Corp.	Delaware
North Hills Signal Processing Overseas LLC	Delaware
Norwich Aero Products Inc.	New York
Offshore Helicopter Support Services, Inc.	Louisiana
Palomar Products, Inc.	Delaware
Paravion Technology, Inc.	Colorado
Pexco Aerospace, Inc.	Delaware
PneuDraulics, Inc.	California
Power Device Corporation	New York
Raptor Labs HoldCo, LLC	Delaware
Raptor Labs Intermediate, LLC	Delaware
Schneller LLC	Delaware
Semco Instruments, Inc.	Delaware
Sensor Concepts, LLC	Delaware
Shield Restraint Systems, Inc.	Delaware
Simplex Manufacturing Co.	Oregon
Skandia, Inc.	Illinois
Skurka Aerospace Inc.	Delaware
Space Electronics LLC	Delaware
Symetrics Industries, LLC	Florida
TA Aerospace Co.	California
Tactair Fluid Controls, Inc.	New York
TDG ESL Holdings Inc.	Delaware
TEAC Aerospace Technologies, Inc.	Delaware
Telair US LLC	Delaware
TestVonics, Inc.	New Hampshire

Subsidiary Guarantors	Jurisdiction of Incorporation or Organization
Texas Rotronics, Inc.	Texas
TransDigm UK Holdings Limited	United Kingdom
Transicoil LLC	Delaware
Whippany Actuation Systems, LLC	Delaware
Young & Franklin Inc.	New York

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Kevin Stein, certify that:

1.I have reviewed this quarterly report on Form 10-Q of TransDigm Group Incorporated;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s second fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors:

(a)all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 6, 2025

/s/ Kevin Stein

Name: Kevin Stein

Title: President, Chief Executive Officer and Director

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Sarah Wynne, certify that:

1.I have reviewed this quarterly report on Form 10-Q of TransDigm Group Incorporated;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s second fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors:

(a)all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 6, 2025

/s/ Sarah Wynne

Name: Sarah Wynne

Title: Chief Financial Officer

(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of TransDigm Group Incorporated (the “Company”) for the quarter ended March 29, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Kevin Stein, President, Chief Executive Officer and Director (Principal Executive Officer), certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities and Exchange Act of 1934; and

2.The information contained in the Report fairly presents in all material respects, the financial condition of the Company as of the dates indicated and results of operations of the Company for the periods indicated.

Date: May 6, 2025

/s/ Kevin Stein

Name: Kevin Stein

Title: President, Chief Executive Officer and Director

(Principal Executive Officer)

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of TransDigm Group Incorporated (the “Company”) for the quarter ended March 29, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Sarah Wynne, Chief Financial Officer (Principal Financial Officer), certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities and Exchange Act of 1934; and

2.The information contained in the Report fairly presents in all material respects, the financial condition of the Company as of the dates indicated and results of operations of the Company for the periods indicated.

Date: May 6, 2025

/s/ Sarah Wynne

Name: Sarah Wynne

Title: Chief Financial Officer

(Principal Financial Officer)

XML

Cover Page - shares	6 Months Ended
	Mar. 29, 2025	Apr. 30, 2025
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 29, 2025
Document Transition Report	false
Entity File Number	001-32833
Entity Registrant Name	TransDigm Group Incorporated
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	41-2101738
Entity Address, Address Line One	1350 Euclid Avenue,
Entity Address, Address Line Two	Suite 1600,
Entity Address, City or Town	Cleveland,
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44115
City Area Code	216
Local Phone Number	706-2960
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	TDG
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		56,167,085
Amendment Flag	false
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001260221
Current Fiscal Year End Date	--09-30

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 29, 2025	Sep. 30, 2024
CURRENT ASSETS:
Cash and cash equivalents	$ 2,426	$ 6,261
Trade accounts receivable—Net	1,442	1,381
Inventories—Net	2,010	1,876
Prepaid expenses and other	530	511
Total current assets	6,408	10,029
PROPERTY, PLANT AND EQUIPMENT—NET	1,519	1,488
GOODWILL	10,355	10,419
OTHER INTANGIBLE ASSETS—NET	3,422	3,446
OTHER NON-CURRENT ASSETS	201	204
TOTAL ASSETS	21,905	25,586
CURRENT LIABILITIES:
Current portion of long-term debt	94	98
Short-term borrowings—trade receivable securitization facility	649	486
Accounts payable	319	323
Dividends payable	0	4,216
Accrued and other current liabilities	1,012	1,216
Total current liabilities	2,074	6,339
LONG-TERM DEBT	24,306	24,296
DEFERRED INCOME TAXES	761	766
OTHER NON-CURRENT LIABILITIES	428	468
Total liabilities	27,569	31,869
TD GROUP STOCKHOLDERS’ DEFICIT:
Common stock - $.01 par value; authorized 224,400,000 shares; issued 62,207,948 and 61,904,833 at March 29, 2025 and September 30, 2024, respectively	1	1
Additional paid-in capital	2,981	2,819
Accumulated deficit	(6,407)	(7,362)
Accumulated other comprehensive loss	(171)	(42)
Treasury stock, at cost; 5,984,108 and 5,688,639 shares at March 29, 2025 and September 30, 2024, respectively	2,075	1,706
Total TD Group stockholders’ deficit	(5,671)	(6,290)
NONCONTROLLING INTERESTS	7	7
Total stockholders’ deficit	(5,664)	(6,283)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 21,905	$ 25,586

XML

CONDENSED CONSOLIDATED BALANCE SHEETS PARENTHETICAL	Mar. 29, 2025 $ / shares shares
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share) | $ / shares	$ 0.01
Common stock, shares authorized (in shares)	224,400,000
Common stock, shares issued (in shares)	62,207,948
Treasury stock, shares outstanding (in shares)	5,984,108

XML

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Income Statement [Abstract]
NET SALES	$ 2,150	$ 1,919	$ 4,156	$ 3,708
COST OF SALES	876	767	1,647	1,515
GROSS PROFIT	1,274	1,152	2,509	2,193
SELLING AND ADMINISTRATIVE EXPENSES	236	248	447	467
AMORTIZATION OF INTANGIBLE ASSETS	47	37	97	72
INCOME FROM OPERATIONS	991	867	1,965	1,654
INTEREST EXPENSE—NET	378	326	756	626
REFINANCING COSTS	0	28	0	28
OTHER INCOME	9	6	32	8
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	622	519	1,241	1,008
INCOME TAX PROVISION	143	115	269	222
NET INCOME	479	404	972	786
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0	(1)	0	(1)
NET INCOME ATTRIBUTABLE TO TD GROUP	479	403	972	785
Supplemental Income Statement Elements [Abstract]
NET INCOME APPLICABLE TO TD GROUP COMMON STOCKHOLDERS	$ 479	$ 403	$ 923	$ 684
Earnings per share attributable to TD Group common stockholders:
Earnings per share - basic (in usd per share)	$ 8.24	$ 6.97	$ 15.86	$ 11.83
Earnings per share - diluted (in usd per share)	8.24	6.97	15.86	11.83
Cash dividends paid per common share (in usd per share)	$ 0	$ 0	$ 0	$ 35.00
Weighted-average shares outstanding:
Weighted-average shares outstanding - basic (in shares)	58.1	57.8	58.2	57.8
Weighted-average shares outstanding - diluted (in shares)	58.1	57.8	58.2	57.8

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Mar. 29, 2025	Dec. 28, 2024	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 479		$ 404	$ 972	$ 786
Less: Net income attributable to noncontrolling interests	0		(1)	0	(1)
NET INCOME ATTRIBUTABLE TO TD GROUP	479	$ 493	403	972	785
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	100	(227)	(60)	(127)	31
Unrealized (losses) gains on derivatives	(24)	22	2	(2)	(51)
Pension and post-retirement benefit plans adjustment	0	$ 0	0	0	0
Other comprehensive income (loss), net of tax, attributable to TD Group	76		(58)	(129)	(20)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$ 555		$ 345	$ 843	$ 765

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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ deficit	$ (1,978)	$ 1	$ 2,440	$ (2,621)	$ (98)	$ (1,706)	$ 6
BALANCE (in shares) at Sep. 30, 2023		60,995,513
Balance at beginning of period at Sep. 30, 2023	(1,978)	$ 1	2,440	(2,621)	(98)	$ (1,706)	6
BALANCE, Treasury Stock (in shares) at Sep. 30, 2023						(5,688,639)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Changes in noncontrolling interest of consolidated subsidiaries, net	1						1
Special dividends ($35.00 per share) and vested dividend equivalents	(2,020)			(2,020)
Accrued unvested dividend equivalents and other	(7)			(7)
Compensation expense recognized for employee stock options	26		26
Stock-based compensation activity (in shares)		216,150
Stock-based compensation activity	52		52
NET INCOME ATTRIBUTABLE TO TD GROUP	382			382
Net income attributable to TD Group					91
Foreign currency translation adjustment	91
Unrealized gain (loss) on derivatives, net of tax	(53)				(53)
Pension and postretirement benefit plans adjustment, net of tax					0
Pension and post-retirement benefit plans adjustment	0
BALANCE (in shares) at Dec. 30, 2023		61,211,663
Balance at end of period at Dec. 30, 2023	(3,506)	$ 1	2,518	(4,266)	(60)	$ (1,706)	7
BALANCE, Treasury Stock (in shares) at Dec. 30, 2023						(5,688,639)
BALANCE (in shares) at Sep. 30, 2023		60,995,513
Balance at beginning of period at Sep. 30, 2023	(1,978)	$ 1	2,440	(2,621)	(98)	$ (1,706)	6
BALANCE, Treasury Stock (in shares) at Sep. 30, 2023						(5,688,639)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
NET INCOME ATTRIBUTABLE TO TD GROUP	785
Foreign currency translation adjustment	31
Pension and post-retirement benefit plans adjustment	0
BALANCE (in shares) at Mar. 30, 2024		61,622,411
Balance at end of period at Mar. 30, 2024	(3,022)	$ 1	2,664	(3,870)	(118)	$ (1,706)	7
BALANCE, Treasury Stock (in shares) at Mar. 30, 2024						(5,688,639)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ deficit	(3,506)	$ 1	2,518	(4,266)	(60)	$ (1,706)	7
BALANCE (in shares) at Dec. 30, 2023		61,211,663
Balance at beginning of period at Dec. 30, 2023	(3,506)	$ 1	2,518	(4,266)	(60)	$ (1,706)	7
BALANCE, Treasury Stock (in shares) at Dec. 30, 2023						(5,688,639)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued unvested dividend equivalents and other	(7)			(7)
Compensation expense recognized for employee stock options	33		33
Stock-based compensation activity (in shares)		410,748
Stock-based compensation activity	113		113
NET INCOME ATTRIBUTABLE TO TD GROUP	403			403
Net income attributable to TD Group					(60)
Foreign currency translation adjustment	(60)
Unrealized gain (loss) on derivatives, net of tax	2				2
Pension and postretirement benefit plans adjustment, net of tax					0
Pension and post-retirement benefit plans adjustment	0
BALANCE (in shares) at Mar. 30, 2024		61,622,411
Balance at end of period at Mar. 30, 2024	(3,022)	$ 1	2,664	(3,870)	(118)	$ (1,706)	7
BALANCE, Treasury Stock (in shares) at Mar. 30, 2024						(5,688,639)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ deficit	(3,022)	1	2,664	(3,870)	(118)	$ (1,706)	7
Total stockholders’ deficit	$ (6,283)	$ 1	2,819	(7,362)	(42)	(1,706)	7
BALANCE (in shares) at Sep. 30, 2024	61,904,833	61,904,833
Balance at beginning of period at Sep. 30, 2024	$ (6,283)	$ 1	2,819	(7,362)	(42)	$ (1,706)	7
BALANCE, Treasury Stock (in shares) at Sep. 30, 2024	(5,688,639)					5,688,639
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued unvested dividend equivalents and other	$ (8)			(8)
Compensation expense recognized for employee stock options	33		33
Stock-based compensation activity (in shares)		118,080
Stock-based compensation activity	35		35
Stock repurchases under repurchase program (in shares)						(252,800)
Stock repurchases under repurchase program	(316)					$ (316)
NET INCOME ATTRIBUTABLE TO TD GROUP	493			493
Net income attributable to TD Group					(227)
Foreign currency translation adjustment	(227)
Unrealized gain (loss) on derivatives, net of tax					22
Pension and postretirement benefit plans adjustment, net of tax					0
Pension and post-retirement benefit plans adjustment	0
BALANCE (in shares) at Dec. 28, 2024		62,022,913
Balance at end of period at Dec. 28, 2024	$ (6,251)	$ 1	2,887	(6,877)	(247)	$ (2,022)	7
BALANCE, Treasury Stock (in shares) at Dec. 28, 2024						5,941,439
BALANCE (in shares) at Sep. 30, 2024	61,904,833	61,904,833
Balance at beginning of period at Sep. 30, 2024	$ (6,283)	$ 1	2,819	(7,362)	(42)	$ (1,706)	7
BALANCE, Treasury Stock (in shares) at Sep. 30, 2024	(5,688,639)					5,688,639
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchases under repurchase program (in shares)	(295,469)
Stock repurchases under repurchase program	$ (369)
NET INCOME ATTRIBUTABLE TO TD GROUP	972
Foreign currency translation adjustment	(127)
Pension and post-retirement benefit plans adjustment	$ 0
BALANCE (in shares) at Mar. 29, 2025	62,207,948	62,207,948
Balance at end of period at Mar. 29, 2025	$ (5,664)	$ 1	2,981	(6,407)	(171)	$ (2,075)	7
BALANCE, Treasury Stock (in shares) at Mar. 29, 2025	(5,984,108)					5,984,108
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ deficit	$ (6,251)	$ 1	2,887	(6,877)	(247)	$ (2,022)	7
BALANCE (in shares) at Dec. 28, 2024		62,022,913
Balance at beginning of period at Dec. 28, 2024	(6,251)	$ 1	2,887	(6,877)	(247)	$ (2,022)	7
BALANCE, Treasury Stock (in shares) at Dec. 28, 2024						5,941,439
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued unvested dividend equivalents and other	(9)			(9)
Compensation expense recognized for employee stock options	39		39
Stock-based compensation activity (in shares)		185,035
Stock-based compensation activity	$ 55		55
Stock repurchases under repurchase program (in shares)	(42,669)					(42,669)
Stock repurchases under repurchase program	$ (53)					$ (53)
NET INCOME ATTRIBUTABLE TO TD GROUP	479			479
Net income attributable to TD Group					100
Foreign currency translation adjustment	100
Unrealized gain (loss) on derivatives, net of tax					(24)
Pension and postretirement benefit plans adjustment, net of tax					0
Pension and post-retirement benefit plans adjustment	$ 0
BALANCE (in shares) at Mar. 29, 2025	62,207,948	62,207,948
Balance at end of period at Mar. 29, 2025	$ (5,664)	$ 1	2,981	(6,407)	(171)	$ (2,075)	7
BALANCE, Treasury Stock (in shares) at Mar. 29, 2025	(5,984,108)					5,984,108
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ deficit	$ (5,664)	$ 1	$ 2,981	$ (6,407)	$ (171)	$ (2,075)	$ 7

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CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024
OPERATING ACTIVITIES:
NET INCOME	$ 972	$ 786
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	81	71
Amortization of intangible assets and product certification costs	98	72
Amortization of debt issuance costs, original issue discount and premium	19	22
Amortization of inventory step-up	7	3
Amortization of loss contract reserves	(30)	(17)
Refinancing costs	0	28
Gain on sale of businesses, net	(19)	0
Non-cash stock and deferred compensation expense	73	111
Deferred income taxes	(2)	(1)
Foreign currency exchange (gains) losses	(10)	5
Changes in assets/liabilities, net of effects from acquisitions and sales of businesses:
Trade accounts receivable	(66)	36
Inventories	(123)	(114)
Income taxes receivable	(107)	(136)
Other assets	12	(23)
Accounts payable	(2)	(9)
Accrued interest	127	61
Accrued and other liabilities	(130)	(30)
Net cash provided by operating activities	900	865
INVESTING ACTIVITIES:
Capital expenditures	(98)	(84)
Acquisition of businesses, net of cash acquired	(140)	(87)
Other investing transactions	47	0
Net cash used in investing activities	(191)	(171)
FINANCING ACTIVITIES:
Proceeds from exercise of stock options	89	165
Dividends and dividend equivalent payments	(4,396)	(2,038)
Repurchases of common stock	(369)	0
Proceeds from issuance of senior secured notes, net	0	5,887
Repayments of senior secured notes	0	(4,400)
Proceeds from term loans, net	0	2,689
Proceeds from trade receivable securitization facility, net	163	99
Repayment on term loans	(22)	(1,730)
Financing costs and other, net	(5)	(4)
Net cash (used in) provided by financing activities	(4,540)	668
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(4)	4
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(3,835)	1,366
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD		3,472
CASH AND CASH EQUIVALENTS, END OF PERIOD	2,426	4,838
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for interest, net	597	545
Cash paid during the period for income taxes, net of refunds	$ 372	$ 350

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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT (Parenthetical)	3 Months Ended
	Dec. 30, 2023 $ / shares
Statement of Stockholders' Equity [Abstract]
Dividends declared (in usd per share)	$ 35.00

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BASIS OF PRESENTATION

6 Months Ended

Mar. 29, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION

BASIS OF PRESENTATION

As used in this Quarterly Report on Form 10-Q, unless the context otherwise indicates, the terms “the Company,” “TD Group,” “TransDigm,” “we,” “us,” “our,” and similar references refer to TransDigm Group Incorporated and its subsidiaries.

Principles of Consolidation

The financial information included herein is unaudited; however, the information reflects all adjustments (consisting of normal recurring adjustments) that are, in the opinion of management, necessary for a fair presentation of the Company’s condensed consolidated financial statements for the interim periods presented. These financial statements and notes should be read in conjunction with the financial statements and related notes for the fiscal year ended September 30, 2024 included in TD Group’s Annual Report on Form 10-K filed on November 7, 2024. As disclosed therein, the Company’s annual consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States (“U.S. GAAP”). The September 30, 2024 condensed consolidated balance sheet was derived from TD Group’s audited financial statements. The results of operations for the twenty-six week period ended March 29, 2025 are not necessarily indicative of the results to be expected for the full year.

Reclassifications

Certain reclassifications have been made to the prior year amounts to conform to the current year presentation, none of which are material.

New Accounting Pronouncements Issued

In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” ASU 2023-07 expands disclosures about a public business entity's reportable segments and provides for more detailed information about a reportable segment's expenses. Additionally, ASU 2023-07 requires all segment profit or loss and assets disclosures to be provided on an annual and interim basis. This standard is effective for annual periods beginning after December 15, 2023 (fiscal 2025) and interim periods within fiscal years beginning one year later (fiscal 2026). The Company plans to adopt this standard beginning with our fiscal 2025 Form 10-K. While we expect the adoption of this standard will expand our disclosures within the “Segments” note, we do not expect it to have any impact on our consolidated financial statements.

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires a public business entity to disclose specific categories in its annual effective tax rate reconciliation and disaggregated information about significant reconciling items by jurisdiction and by nature. The ASU also requires entities to disclose their income tax payments (net of refunds) to international, federal, and state and local jurisdictions. The standard makes several other changes to income tax disclosure requirements. This standard is effective for annual periods beginning after December 15, 2024 (fiscal 2026), and requires prospective application with the option to apply it retrospectively. Early adoption is permitted. The Company is currently evaluating this standard to determine its impact on our disclosures.

In November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses.” Additionally, in January 2025, the FASB issued ASU 2025-01 to clarify the effective date of ASU 2024-03. The standard requires, among other items, additional disaggregated disclosures in the notes to financial statements for certain categories of expenses that are included on the face of the statement of income. The standard is effective for fiscal years beginning after December 15, 2026 (fiscal 2028), and for interim periods within fiscal years beginning after December 15, 2027 (fiscal 2029), on a retrospective or prospective basis, with early adoption permitted. The Company is currently evaluating this standard to determine its impact on our disclosures.

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ACQUISITIONS

6 Months Ended

Mar. 29, 2025

Business Combinations [Abstract]

ACQUISITIONS

ACQUISITIONS

Raptor Scientific – On July 31, 2024, the Company acquired all the outstanding stock of Raptor Scientific for approximately $646 million, which includes a working capital settlement of $1 million received in the first quarter of fiscal 2025. The acquisition was financed through existing cash on hand. Raptor Scientific is a leading global manufacturer of complex test and measurement solutions primarily serving the aerospace and defense end markets. Its products are highly engineered, proprietary components with significant aftermarket content and a strong presence across major aerospace and defense platforms. The operating results of Raptor Scientific are included within TransDigm's Airframe segment.

As of March 29, 2025, the measurement period (not to exceed one year) is open; therefore, the assets acquired and liabilities assumed related to the acquisition of Raptor Scientific are subject to adjustment until the end of the respective measurement period, including those related to deferred taxes and income taxes.

The Company accounted for the acquisition of Raptor Scientific using the acquisition method of accounting and a third-party valuation appraisal and included the results of operations of the acquisition in its condensed consolidated financial statements from the effective date of the acquisition. The total purchase price was allocated to identifiable assets and liabilities based upon the respective fair value at the date of acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The fair values of acquired intangibles are determined based on an income approach, using estimates and assumptions that are deemed reasonable by the Company. Certain assumptions include the discount rates and other assumptions that form the basis of the forecasted results of the acquired business including revenue, earnings before interest, taxes, depreciation and amortization (“EBITDA”), growth rates, royalty rates and technology obsolescence rates. These assumptions are forward looking and could be affected by future economic and market conditions. Pro forma net sales and results of operations for the acquisition, had it occurred at the beginning of the twenty-six week period March 30, 2024 are not material and, accordingly, are not provided.

The allocation of the estimated fair value of assets acquired and liabilities assumed in the acquisition of Raptor Scientific as of the July 31, 2024 acquisition date, as well as measurement period adjustments recorded within the permissible one year measurement period, is summarized in the table below (in millions):

	Preliminary		Measurement Period		Adjusted Preliminary
	Allocation		Adjustments (2)		Allocation
Assets acquired (excluding cash):
Trade accounts receivable	$	9	$	—	$	9
Inventories	22		(1)		21
Prepaid expenses and other	4		—		4
Property, plant and equipment	2		—		2
Goodwill	426		(61)		365		(1)
Other intangible assets	197		67		264		(1)
Other non-current assets	5		—		5
Total assets acquired (excluding cash)	665		5		670
Liabilities assumed:
Accounts payable	1		—		1
Accrued and other current liabilities	13		3		16
Deferred income taxes	—		3		3
Other non-current liabilities	4		—		4
Total liabilities assumed	18		6		24
Net assets acquired	$	647	$	(1)	$	646

(1)Of the approximately $365 million of goodwill recognized for the acquisition, the Company expects that approximately $350 million of goodwill will be deductible for tax purposes. Of the approximately $264 million of other intangible assets recognized for the acquisition, the Company expects that approximately $251 million will be deductible for tax purposes. The goodwill and intangible assets are expected to be deductible over 15 years.

(2)Measurement period adjustments primarily related to the adjustments in the fair values of the acquired other intangible assets from the third-party valuation. The offset to the measurement period adjustments was to goodwill.

CPI's Electron Device Business – On June 6, 2024, the Company acquired all the outstanding stock of the Electron Device Business of Communications & Power Industries (“CPI's Electron Device Business”) for approximately $1,386 million in cash, which includes a $1 million working capital settlement paid in the first quarter of fiscal 2025. The acquisition was financed through existing cash on hand. CPI’s Electron Device Business is a leading global manufacturer of electronic components and subsystems primarily serving the aerospace and defense market. Its products are highly engineered, proprietary components with significant aftermarket content and a strong presence across major aerospace and defense platforms. The operating results of CPI’s Electron Device Business are included within TransDigm's Power & Control segment.

As of March 29, 2025, the measurement period (not to exceed one year) is open; therefore, the assets acquired and liabilities assumed related to the acquisition of CPI's Electron Device Business are subject to adjustment until the end of the respective measurement period, including those related to deferred taxes and income taxes.

The Company accounted for the acquisition of CPI's Electron Device Business using the acquisition method of accounting and a third-party valuation appraisal and included the results of operations of the acquisition in its condensed consolidated financial statements from the effective date of the acquisition. The total purchase price was allocated to identifiable assets and liabilities based upon the respective fair value at the date of acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The Company utilized both the cost and market approaches to value property, plant and equipment, which consider external transactions and other comparable transactions, estimated replacement and reproduction costs, and estimated useful lives and consideration for physical, functional and economic obsolescence. The fair values of acquired intangibles are determined based on an income approach, using estimates and assumptions that are deemed reasonable by the Company. Certain assumptions include the discount rates and other assumptions that form the basis of the forecasted results of the acquired business including revenue, EBITDA, growth rates, royalty rates and technology obsolescence rates. These assumptions are forward looking and could be affected by future economic and market conditions.

Pro forma net sales and results of operations for the acquisition, had it occurred at the beginning of the twenty-six week period March 30, 2024 are not material and, accordingly, are not provided.

The allocation of the estimated fair value of assets acquired and liabilities assumed in the acquisition of CPI's Electron Device Business as of the June 6, 2024 acquisition date, as well as measurement period adjustments recorded within the permissible one year measurement period, is summarized in the table below (in millions):

	Preliminary		Measurement Period		Adjusted Preliminary
	Allocation		Adjustments (2)		Allocation
Assets acquired (excluding cash):
Trade accounts receivable	$	40	$	—	$	40
Inventories	81		(1)		80
Prepaid expenses and other	64		(1)		63
Property, plant and equipment	137		31		168
Goodwill	844		(92)		752		(1)
Other intangible assets	368		141		509		(1)
Other non-current assets	15		(14)		1
Total assets acquired (excluding cash)	1,549		64		1,613
Liabilities assumed:
Accounts payable	18		(1)		17
Accrued and other current liabilities	45		19		64
Deferred income taxes	89		55		144
Other non-current liabilities	12		(10)		2
Total liabilities assumed	164		63		227
Net assets acquired	$	1,385	$	1	$	1,386

(1)None of the approximately $752 million of goodwill and $509 million of other intangible assets recognized for the acquisition is expected to be deductible for tax purposes.

(2)Measurement period adjustments primarily related to the adjustments in the fair values of the acquired property, plant and equipment and other intangible assets from the third-party valuation and related impact on deferred income taxes. The offset to the measurement period adjustments was to goodwill.

SEI Industries LTD – On May 21, 2024, the Company acquired all the outstanding stock of SEI Industries LTD (“SEI”) for approximately $171 million in cash, which included a working capital settlement of $1 million paid in the first quarter of fiscal 2025. The acquisition was financed through existing cash on hand. SEI, located in Delta, British Columbia, Canada, is a leading provider of highly engineered products for aerial firefighting and other liquid transportation solutions, such as remote refueling, for both the commercial and defense aerospace end markets. The products are primarily proprietary with significant aftermarket content. SEI's operating results are presented within TransDigm's Airframe segment.

As of March 29, 2025, the measurement period (not to exceed one year) is open; therefore, the assets acquired and liabilities assumed related to the acquisition of SEI are subject to adjustment until the end of the respective measurement period.

The Company accounted for the SEI acquisition using the acquisition method of accounting and a third-party valuation appraisal and included the results of operations of the acquisition in its condensed consolidated financial statements from the effective date of the acquisition. The total purchase price was allocated to identifiable assets and liabilities based upon the respective fair value at the date of acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The fair values of acquired intangibles are determined based on an income approach, using estimates and assumptions that are deemed reasonable by the Company. Certain assumptions include the discount rates and other assumptions that form the basis of the forecasted results of the acquired business including revenue, EBITDA, growth rates, royalty rates and technology obsolescence rates. These assumptions are forward looking and could be affected by future economic and market conditions.

Pro forma net sales and results of operations for the acquisition, had it occurred at the beginning of the twenty-six week period March 30, 2024 are not material and, accordingly, are not provided.

The allocation of the estimated fair value of assets acquired and liabilities assumed in the SEI acquisition as of the May 21, 2024 acquisition date, as well as measurement period adjustments recorded within the permissible one year measurement period, is summarized in the table below (in millions):

	Preliminary		Measurement Period		Adjusted Preliminary
	Allocation		Adjustments (2)		Allocation
Assets acquired (excluding cash):
Trade accounts receivable	$	2	$	2	$	4
Inventories	11		—		11
Prepaid expenses and other	—		1		1
Property, plant and equipment	1		—		1
Goodwill	109		(6)		103		(1)
Other intangible assets	68		7		75		(1)
Total assets acquired (excluding cash)	191		4		195
Liabilities assumed:
Accounts payable	1		1		2
Accrued and other current liabilities	1		—		1
Deferred income taxes	19		2		21
Total liabilities assumed	21		3		24
Net assets acquired	$	170	$	1	$	171

(1)None of the approximately $103 million of goodwill and $75 million of other intangible assets recognized for the acquisition is expected to be deductible for tax purposes.

(2)Measurement period adjustments primarily related to the adjustments in the fair values of the acquired other intangible assets from the third-party valuation. The offset to the measurement period adjustments was to goodwill.

FPT Industries LLC – On March 1, 2024, the Company acquired all the outstanding stock of FPT Industries LLC (“FPT”) for approximately $57 million in cash. The acquisition was financed through existing cash on hand. FPT, which has facilities in the United Kingdom and Alabama, designs and manufactures an extensive range of specialist fuel tanks and flotation systems for both the commercial and defense aerospace end markets. The products are primarily proprietary with significant aftermarket content. FPT's operating results are presented within TransDigm's Airframe segment.

The Company accounted for the FPT acquisition using the acquisition method of accounting and included the results of operations of the acquisition in its condensed consolidated financial statements from the effective date of the acquisition. The total purchase price was allocated to identifiable assets and liabilities based upon the respective fair value at the date of acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. Of the approximately $35 million of goodwill recognized for the acquisition, $9 million is deductible for tax purposes over 15 years. None of the approximately $19 million of other intangible assets recognized for the acquisition is deductible for tax purposes.

Pro forma net sales and results of operations for the acquisition, had it occurred at the beginning of the twenty-six week period March 30, 2024 are not material and, accordingly, are not provided.

The fiscal 2024 acquisitions of Raptor Scientific, CPI's Electron Device Business, SEI and FPT completed by the Company strengthen and expand the Company’s position to design, produce and supply highly engineered proprietary aerospace components in niche markets with significant aftermarket content and provide opportunities to create value through the application of our three core value-driven operating strategy (obtaining profitable new business, continually improving our cost structure, and providing highly engineered value-added products to customers). The purchase prices paid reflect the current EBITDA As Defined and cash flows, as well as the future EBITDA As Defined and cash flows expected to be generated by the businesses, which are driven in most cases by the recurring aftermarket consumption over the life of a particular aircraft, estimated to be approximately 25 to 30 years.

Extant Aerospace Acquisitions – For the twenty-six week period ended March 29, 2025, the Company's Extant Aerospace subsidiary, which is included within TransDigm’s Power & Control segment, completed a series of acquisitions of substantially all of the assets and technical data rights of certain product lines, each meeting the definition of a business, for a total purchase price of $113 million. The Company accounted for the acquisitions using the acquisition method of accounting and included the results of operations of the acquisitions in its condensed consolidated financial statements from the effective date of each acquisition. To the extent the purchase price exceeded the fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The allocation of the purchase price remains preliminary and will likely change, though not materially, in future periods up to the expiration of the respective one year measurement period as fair value estimates of the assets acquired and liabilities assumed are finalized. The Company expects that all of the approximately $43 million of goodwill and $33 million of other intangible assets recognized for the acquisitions will be deductible for tax purposes over 15 years.

For the fiscal year ended September 30, 2024, the Company's Extant Aerospace subsidiary completed a series of acquisitions of substantially all of the assets and technical data rights of certain product lines, each meeting the definition of a business, for a total purchase price of $86 million. The Company expects that all of the approximately $40 million of goodwill and $22 million of other intangible assets recognized for the acquisitions will be deductible for tax purposes over 15 years.

Pro forma net sales and results of operations for the Extant Aerospace product line acquisitions, had they occurred at the beginning of the twenty-six week periods ended March 29, 2025 or March 30, 2024 are not material and, accordingly, are not provided.

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REVENUE RECOGNITION

6 Months Ended

Mar. 29, 2025

Revenue from Contract with Customer [Abstract]

REVENUE RECOGNITION

REVENUE RECOGNITION

TransDigm's sales are concentrated in the aerospace and defense industry. The Company’s customers include: distributors of aerospace components, commercial airlines, large commercial transport and regional and business aircraft original equipment manufacturers (“OEMs”), various armed forces of the U.S. and friendly foreign governments, defense OEMs, system suppliers, and various other industrial customers.

The Company recognizes revenue from contracts with customers using the five step model prescribed in ASC 606. A substantial portion of the Company's revenue is recorded at a point in time basis. Revenue is recognized from the sale of products or services when obligations under the terms of the contract are satisfied and control of promised goods or services have transferred to the customer. Control is transferred when the customer has the ability to direct the use of and obtain benefits from the goods or services. Revenue is measured at the amount of consideration the Company expects to be paid in exchange for goods or services.

In a limited number of contracts, control transfers to the customer over time, primarily in contracts where the customer is required to pay for the cost of both the finished and unfinished goods at the time of cancellation plus a reasonable profit relative to the work performed for products that were customized for the customer. Therefore, we recognize revenue over time for those agreements that have a right to margin and where the products being produced have no alternative use. 

Based on our production cycle, it is generally expected that goods related to the revenue will be shipped and billed within twelve months. For revenue recognized over time, we estimate the amount of revenue attributable to a contract earned at a given point during the production cycle based on certain costs, such as materials and labor incurred to date, plus the expected profit, which is a cost-to-cost input method.

We consider the contractual consideration payable by the customer and assess variable consideration that may affect the total transaction price. Variable consideration is included in the estimated transaction price when there is a basis to reasonably estimate the amount, including whether the estimate should be constrained in order to avoid a significant reversal of revenue in a future period. These estimates are based on historical experience, anticipated performance under the terms of the contract and our best judgment at the time.

When contracts are modified to account for changes in contract specifications and requirements, the Company considers whether the modification either creates new or changes the existing enforceable rights and obligations. Contract modifications that are for goods or services that are not distinct from the existing contract, due to the significant integration with the original good or service provided, are accounted for as if they were part of that existing contract. The effect of a contract modification to an existing contract on the transaction price and our measure of progress for the performance obligation to which it relates, is recognized as an adjustment to revenue on a cumulative catch-up basis. When the modifications include additional performance obligations that are distinct and at relative stand-alone selling price, they are accounted for as a new contract and performance obligation, which are recognized prospectively.

The Company’s payment terms vary by the type and location of the customer and the products or services offered. The Company does not offer any payment terms that would meet the requirements for consideration as a significant financing component.

Shipping and handling fees and costs incurred in connection with products sold are recorded in cost of sales in the condensed consolidated statements of income, and are not considered a performance obligation to our customers.

The Company pays sales commissions that relate to contracts for products or services that are satisfied at a point in time or over a period of one year or less and are expensed as incurred. These costs are reported as a component of selling and administrative expenses in the condensed consolidated statements of income.

We have elected to adopt the practical expedient to not disclose the aggregate amount of transaction price allocated to performance obligations that are unsatisfied as of the end of the reporting period for performance obligations that are part of a contract with an original expected duration of one year or less.

Contract Assets and Liabilities – Contract assets reflect revenue recognized and performance obligations satisfied in advance of customer billing or reimbursable costs related to a specific contract. Contract liabilities (Deferred revenue) relate to payments received in advance of the satisfaction of performance under the contract. We receive payments from customers based on the terms established in our contracts. The following table summarizes our contract assets and liabilities balances (in millions):

	March 29, 2025		September 30, 2024
Contract assets, current (1)	$	250	$	270
Contract assets, non-current (2)	65		31
Total contract assets	315		301
Contract liabilities, current (3)	141		168
Contract liabilities, non-current (4)	8		9
Total contract liabilities	149		177
Net contract assets	$	166	$	124

(1)Included in prepaid expenses and other on the condensed consolidated balance sheets.

(2)Included in other non-current assets on the condensed consolidated balance sheets.

(3)Included in accrued and other current liabilities on the condensed consolidated balance sheets.

(4)Included in other non-current liabilities on the condensed consolidated balance sheets.

The increase in non-current contract assets is attributable to expected customer billing of certain contracts exceeding one year from March 29, 2025. For the twenty-six week period ended March 29, 2025, the revenue recognized that was included in the contract liabilities was approximately $102 million.

Refer to Note 12, “Segments,” for disclosures related to the disaggregation of revenue.

Allowance for Credit Losses – The Company's allowance for credit losses is the allowance for uncollectible accounts. The allowance for uncollectible accounts reduces the trade accounts receivable balance to the estimated net realizable value equal to the amount that is expected to be collected.

The Company’s method for developing its allowance for credit losses is based on historical write-off experience, the aging of receivables, an assessment of the creditworthiness of customers, economic conditions and other external market information and supportable forward-looking information. The allowance also incorporates a provision for the estimated impact of disputes with customers. All provisions for allowances for uncollectible accounts are included in selling and administrative expenses. The determination of the amount of the allowance for uncollectible accounts is subject to judgment and estimation by management. If circumstances change or economic conditions deteriorate or improve, the allowance for uncollectible accounts could increase or decrease.

As of March 29, 2025 and September 30, 2024, the allowance for uncollectible accounts was $31 million and $32 million, respectively. The allowance for uncollectible accounts is assessed individually at each operating unit by the operating unit’s management team.

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EARNINGS PER SHARE

6 Months Ended

Mar. 29, 2025

Earnings Per Share [Abstract]

EARNINGS PER SHARE (TWO-CLASS METHOD)

EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per share (in millions, except per share data) using the two-class method:

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Numerator for earnings per share:
Net income	$	479	$	404	$	972	$	786
Less: Net income attributable to noncontrolling interests	—		(1)		—		(1)
Net income attributable to TD Group	479		403		972		785
Less: Dividends paid on participating securities	—		—		(49)		(101)
Net income applicable to TD Group common stockholders—basic and diluted	$	479	$	403	$	923	$	684
Denominator for basic and diluted earnings per share under the two-class method:
Weighted-average common shares outstanding	56.1		55.7		56.2		55.6
Vested options deemed participating securities	2.0		2.1		2.0		2.2
Total shares for basic and diluted earnings per share	58.1		57.8		58.2		57.8
Earnings per share—basic and diluted	$	8.24	$	6.97	$	15.86	$	11.83

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STOCK REPURCHASE PROGRAM

6 Months Ended

Mar. 29, 2025

Equity [Abstract]

STOCK REPURCHASE PROGRAM

STOCK REPURCHASE PROGRAM

Occasionally at management's discretion, the Company repurchases its common stock in the open market, depending on prevailing market conditions, the Company's liquidity requirements, contractual restrictions and other factors. On January 27, 2022, the Board of Directors of the Company (the “Board”) authorized a new stock repurchase program to permit repurchases of its outstanding common stock not to exceed $2,200 million in the aggregate (the “$2,200 million stock repurchase program”), replacing the $650 million stock repurchase program previously authorized by the Board on November 8, 2017, subject to any restrictions specified in the Second Amended and Restated Credit Agreement dated as of June 4, 2014 (the “Credit Agreement”), and indentures governing the Company's existing Notes. There is no expiration date for this program.

During the second quarter of fiscal 2025, the Company repurchased 42,669 shares of common stock at an average price of $1,249.52 per share for a total amount of $53 million. For the twenty-six week period ended March 29, 2025, the Company repurchased 295,469 shares of common stock at an average price of $1,248.78 per share for a total amount of $369 million. The repurchased shares of common stock are classified as treasury stock in the statement of changes in stockholders' deficit. As of March 29, 2025, $919 million remains available for repurchase under the $2,200 million stock repurchase program.

Subsequent Event – April Share Repurchase Activity – In April 2025, the Company repurchased 105,567 shares of common stock at an average price of $1,240.91 per share for a total amount of $131 million.

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INVENTORIES

6 Months Ended

Mar. 29, 2025

Inventory Disclosure [Abstract]

INVENTORIES

INVENTORIES

Inventories are stated at the lower of cost or net realizable value. Cost of inventories is generally determined by the average cost and the first–in, first–out (“FIFO”) methods and includes material, labor and overhead related to the manufacturing process.

Inventories consist of the following (in millions):

	March 29, 2025		September 30, 2024
Raw materials and purchased component parts	$	1,460	$	1,314
Work-in-progress	528		508
Finished goods	269		290
Total	2,257		2,112
Reserves for excess and obsolete inventory	(247)		(236)
Inventories—Net	$	2,010	$	1,876

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INTANGIBLE ASSETS

6 Months Ended

Mar. 29, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS

INTANGIBLE ASSETS

Other intangible assets–net in the condensed consolidated balance sheets consist of the following (in millions):

	March 29, 2025						September 30, 2024
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Trademarks and trade names	$	1,141	$	—	$	1,141	$	1,165	$	—	$	1,165
Technology	2,573		1,061		1,512		2,510		1,003		1,507
Order backlog	48		17		31		61		13		48
Customer relationships	930		197		733		895		175		720
Other	11		6		5		12		6		6
Total	$	4,703	$	1,281	$	3,422	$	4,643	$	1,197	$	3,446

The aggregate amortization expense on identifiable intangible assets is approximately $47 million and $37 million for the thirteen week periods ended March 29, 2025 and March 30, 2024, respectively. The aggregate amortization expense on identifiable intangibles assets is approximately $97 million and $72 million for the twenty-six week periods ended March 29, 2025 and March 30, 2024, respectively.

Intangible assets acquired during the twenty-six week period ended March 29, 2025 are summarized in the table below (in millions):

	Gross Amount		Amortization Period
Intangible assets not subject to amortization:
Goodwill	$	60
Trademarks and trade names	1
	61
Intangible assets subject to amortization:
Technology	24		10 years
Order backlog	4		1 year
Customer relationships	8		10 years
	36
Total	$	97

The following is a summary of changes in the carrying value of goodwill by segment from September 30, 2024 through March 29, 2025 (in millions):

	Power & Control		Airframe		Non-aviation		Total
Balance at September 30, 2024	$	5,020	$	5,306	$	93	$	10,419
Goodwill acquired during the period	60		—		—		60
Purchase price allocation adjustments (1)	6		(61)		—		(55)
Currency translation adjustments and other	(21)		(39)		(9)		(69)
Balance at March 29, 2025	$	5,065	$	5,206	$	84	$	10,355

(1)Primarily related to the opening balance sheet adjustments recorded from the acquisition of Raptor Scientific (Airframe) completed during the fourth quarter of fiscal 2024 and CPI's Electron Device Business (Power & Control) completed during the third quarter of fiscal 2024, within the allowable measurement period (not to exceed one year). Refer to Note 2, “Acquisitions,” for further information.

The Company performs its annual impairment test for goodwill and other intangible assets as of the first day of the fourth fiscal quarter of each year, or more frequently, if events or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. We have assessed the changes in events and circumstances through the second quarter of fiscal 2025 and concluded that no triggering events occurred that required an interim test.

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DEBT

6 Months Ended

Mar. 29, 2025

Debt Disclosure [Abstract]

DEBT

DEBT

The Company’s debt consists of the following (in millions):

	March 29, 2025
	Gross Amount		Debt Issuance Costs		Original Issue Discount		Net Amount
Short-term borrowings—trade receivable securitization facility	$	650	$	(1)	$	—	$	649
Term loans	$	8,680	$	(23)	$	(31)	$	8,626
5.50% senior subordinated notes due 2027 (“5.50% 2027 Notes”)	2,650		(8)		—		2,642
6.75% secured notes due 2028 (“2028 Secured Notes”)	2,100		(13)		(7)		2,080
4.625% senior subordinated notes due 2029 (“4.625% 2029 Notes”)	1,200		(5)		—		1,195
6.375% secured notes due 2029 (“2029 Secured Notes”)	2,750		(20)		(1)		2,729
4.875% senior subordinated notes due 2029 (“4.875% 2029 Notes”)	750		(4)		—		746
6.875% secured notes due 2030 (“2030 Secured Notes”)	1,450		(11)		—		1,439
7.125% secured notes due 2031 (“2031 Secured Notes”)	1,000		(8)		(6)		986
6.625% secured notes due 2032 (“2032 Secured Notes”)	2,200		(18)		—		2,182
6.00% secured notes due 2033 (“2033 Secured Notes”)	1,500		(13)		—		1,487
Government refundable advances	11		—		—		11
Finance lease obligations	277		—		—		277
	24,568		(123)		(45)		24,400
Less: current portion	94		—		—		94
Long-term debt	$	24,474	$	(123)	$	(45)	$	24,306

	September 30, 2024
	Gross Amount		Debt Issuance Costs		Original Issue Discount		Net Amount
Short-term borrowings—trade receivable securitization facility	$	487	$	(1)	$	—	$	486
Term loans	$	8,702	$	(25)	$	(35)	$	8,642
5.50% 2027 Notes	2,650		(9)		—		2,641
2028 Secured Notes	2,100		(15)		(8)		2,077
4.625% 2029 Notes	1,200		(6)		—		1,194
2029 Secured Notes	2,750		(22)		(1)		2,727
4.875% 2029 Notes	750		(4)		—		746
2030 Secured Notes	1,450		(12)		—		1,438
2031 Secured Notes	1,000		(9)		(7)		984
2032 Secured Notes	2,200		(20)		—		2,180
2033 Secured Notes	1,500		(14)		—		1,486
Government refundable advances	17		—		—		17
Finance lease obligations	262		—		—		262
	24,581		(136)		(51)		24,394
Less: current portion	99		(1)		—		98
Long-term debt	$	24,482	$	(135)	$	(51)	$	24,296

Accrued interest, which is classified as a component of accrued and other current liabilities on the condensed consolidated balance sheets, was $312 million and $185 million as of March 29, 2025 and September 30, 2024, respectively.

Trade Receivable Securitization Facility – The Company’s trade receivable securitization facility (the “Securitization Facility”) effectively increases the Company’s borrowing capacity depending on the amount of the domestic operations’ trade accounts receivable. The Securitization Facility includes the right for the Company to exercise annual one year extensions as long as there have been no termination events as defined by the agreement. The Company uses the proceeds from the Securitization Facility as an alternative to other forms of debt, effectively reducing borrowing costs. The Securitization Facility is collateralized by substantially all of the Company’s domestic operations’ trade accounts receivable.

On July 12, 2024, the Company amended the Securitization Facility to, among other things, (i) increase the borrowing capacity from $450 million to $650 million; and (ii) extend the maturity date to July 11, 2025 at an interest rate of Term SOFR plus 1.45% compared to an interest rate of Term SOFR plus 1.60% that applied prior to the amendment. The Company drew the remaining $163 million available under the Securitization Facility in the first quarter of fiscal 2025. At March 29, 2025 and September 30, 2024, the applicable interest rate was 5.75% and 6.73%, respectively.

Government Refundable Advances – Government refundable advances consist of payments received from the Canadian government to assist in research and development related to commercial aviation. The requirement to repay this advance is based on year-over-year commercial aviation revenue growth for certain product lines at CMC Electronics, which is a wholly-owned subsidiary of TransDigm. As of March 29, 2025 and September 30, 2024, the outstanding balance of these advances was $11 million and $17 million, respectively.

Obligations under Finance Leases – The Company leases certain buildings and equipment under finance leases. The present value of the minimum finance lease payments, net of the current portion, represents a balance of $277 million and $262 million at March 29, 2025 and September 30, 2024, respectively. Refer to Note 14, “Leases,” for further disclosure of the Company's lease obligations.

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INCOME TAXES

6 Months Ended

Mar. 29, 2025

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

At the end of each reporting period, TD Group makes an estimate of its annual effective income tax rate. The estimate used in the year-to-date period may change in subsequent periods.

During the thirteen week periods ended March 29, 2025 and March 30, 2024, the effective income tax rate was 23.0% and 22.2%, respectively. During the twenty-six week periods ended March 29, 2025 and March 30, 2024, the effective income tax rate was 21.7% and 22.0%, respectively. The Company’s higher effective income tax rate for the thirteen week period ended March 29, 2025 was primarily due to a less significant discrete benefit associated with share-based payments compared to the prior period. The Company’s lower effective income tax rate for the twenty-six week period ended March 29, 2025 was impacted by the geographic (i.e., U.S. vs. non-U.S.) mix of our pre-tax earnings. The Company’s effective income tax rate for the thirteen and twenty-six week periods ended March 29, 2025 was higher than the federal statutory tax rate of 21% primarily due to an increase in the valuation allowance applicable to the Company’s net interest deduction limitation offset by the discrete impact of excess tax benefits associated with share-based payments.

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various state, local and foreign jurisdictions. The Company is no longer subject to U.S. federal examinations for years before fiscal 2018. The Company is currently under examination for its federal income taxes in Canada for fiscal years 2013 through 2019, in France for fiscal years 2020 through 2022, and in Germany for fiscal years 2017 through 2019. In addition, the Company is subject to state income tax examinations for fiscal years 2015 and later.

Unrecognized tax benefits at March 29, 2025 and September 30, 2024, the recognition of which would have an impact on the effective tax rate for each fiscal year, amounted to $14 million. The Company classifies all income tax-related interest and penalties as income tax expense, which were not significant for the thirteen and twenty-six week periods ended March 29, 2025 and March 30, 2024. As of March 29, 2025 and September 30, 2024, the Company accrued $4 million for the potential payment of interest and penalties. Within the next twelve months, it is reasonably possible that unrecognized tax benefits could be reduced by approximately $2 million resulting primarily from the resolution of tax examinations. Any increase in the amount of unrecognized tax benefits within the next twelve months is not expected to be material.

The Organization for Economic Co-operation and Development (the “OECD”) has proposed a framework comprised of rules and models, collectively referred to as Pillar Two (“P2”), that are designed to ensure that certain multi-national enterprises pay a minimum tax rate of 15% on reported profits arising in each jurisdiction where they operate. Although the OECD provided a framework for applying the minimum tax, individual countries have and may continue to enact P2 rules that are different than the OECD framework. While we continue to monitor P2 developments, we do not anticipate that P2 will have a material impact on our financial position in either the near nor the long-term.

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FAIR VALUE MEASUREMENTS

6 Months Ended

Mar. 29, 2025

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The following summarizes the carrying amounts and fair values of financial instruments (in millions):

		March 29, 2025				September 30, 2024
	Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	2,426	$	2,426	$	6,261	$	6,261
Interest rate swap agreements (1)	2	23		23		34		34
Interest rate cap agreements (1)	2	14		14		20		20
Foreign currency forward exchange contracts (1)	2	—		—		3		3
Interest rate collar agreements (2)	2	9		9		3		3
Liabilities:
Interest rate swap agreements (3)	2	1		1		1		1
Interest rate cap agreements (3)	2	—		—		1		1
Foreign currency forward exchange contracts (3)	2	2		2		—		—
Interest rate collar agreements (4)	2	—		—		8		8
Short-term borrowings - trade receivable securitization facility (5)	2	649		649		486		486
Long-term debt, including current portion:
Term loans (5)	2	8,626		8,664		8,642		8,694
5.50% 2027 Notes (5)	1	2,642		2,617		2,641		2,637
2028 Secured Notes (5)	1	2,080		2,129		2,077		2,160
4.625% 2029 Notes (5)	1	1,195		1,137		1,194		1,160
2029 Secured Notes (5)	1	2,729		2,778		2,727		2,836
4.875% 2029 Notes (5)	1	746		712		746		729
2030 Secured Notes (5)	1	1,439		1,483		1,438		1,519
2031 Secured Notes (5)	1	986		1,029		984		1,058
2032 Secured Notes (5)	1	2,182		2,228		2,180		2,291
2033 Secured Notes (5)	1	1,487		1,476		1,486		1,521
Government refundable advances	2	11		11		17		17
Finance lease obligations	2	277		276		262		262

(1)Included in prepaid expenses and other on the condensed consolidated balance sheets.

(2)Included in other non-current assets on the condensed consolidated balance sheets.

(3)Included in accrued and other current liabilities on the condensed consolidated balance sheets.

(4)Included in other non-current liabilities on the condensed consolidated balance sheets.

(5)The carrying amount of the debt instrument is presented net of debt issuance costs and original issue discount. Refer to Note 8, “Debt,” for gross carrying amounts.

The Company values its financial instruments using an industry standard market approach, in which prices and other relevant information are generated by market transactions involving identical or comparable assets or liabilities. No financial instruments were recognized or disclosed using unobservable inputs (i.e., Level 3).

The Company’s derivatives consist of interest rate swap, cap and collar agreements and foreign currency exchange contracts. The fair values of the interest rate swap, cap and collar agreements were derived by taking the net present value of the expected cash flows using observable market inputs (Level 2) such as SOFR rate curves, futures, volatilities and basis spreads (when applicable). The fair values of the foreign currency exchange contracts were derived by using Level 2 inputs based on observable spot and forward exchange rates in active markets. There has not been any impact to the fair value of derivative liabilities due to the Company's own credit risk. Similarly, there has not been any material impact to the fair value of derivative assets based on the Company's evaluation of counterparties' credit risks.

The estimated fair value of the Company’s term loans was based on information provided by the agent under the Company’s Credit Agreement. The estimated fair values of the Company’s notes were based upon quoted market prices.

The fair value of cash and cash equivalents, trade accounts receivable-net and accounts payable approximated carrying value due to the short-term nature of these instruments at March 29, 2025 and September 30, 2024.

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DERIVATIVES AND HEDGING ACTIVITIES

6 Months Ended

Mar. 29, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVES AND HEDGING ACTIVITIES

DERIVATIVES AND HEDGING ACTIVITIES

The Company is exposed to, among other things, the impact of changes in foreign currency exchange rates and interest rates in the normal course of business. The Company’s risk management program is designed to manage the exposure and volatility arising from these risks, and utilizes derivative financial instruments to offset a portion of these risks. The Company uses derivative financial instruments only to the extent necessary to hedge identified business risks and does not enter into such transactions for trading purposes. The Company generally does not require collateral or other security with counterparties to these financial instruments and is therefore subject to credit risk in the event of nonperformance; however, the Company monitors credit risk and currently does not anticipate nonperformance by other parties. These derivative financial instruments do not subject the Company to undue risk, as gains and losses on these instruments generally offset gains and losses on the underlying assets, liabilities, or anticipated transactions that are being hedged. The Company has agreements with each of its swap, cap and collar counterparties that contain a provision whereby if the Company defaults on the Credit Agreement, the Company could also be declared in default on its swaps, cap and collars resulting in an acceleration of settlement under the swaps, cap and collars.

All derivative financial instruments are recorded at fair value in the condensed consolidated balance sheets. For a derivative that has not been designated as an accounting hedge, the change in the fair value is recognized immediately through earnings. For a derivative that has been designated as an accounting hedge of an existing asset or liability (a fair value hedge), the change in the fair value of both the derivative and underlying asset or liability is recognized immediately through earnings. For a derivative designated as an accounting hedge of an anticipated transaction (a cash flow hedge), the change in the fair value is recorded on the condensed consolidated balance sheets in accumulated other comprehensive loss to the extent the derivative is effective in mitigating the exposure related to the anticipated transaction. The change in the fair value related to the ineffective portion of the hedge, if any, is immediately recognized in earnings. The amount recorded within accumulated other comprehensive loss is reclassified into earnings in the same period during which the underlying hedged transaction affects earnings.

Interest Rate Swap, Cap and Collar Agreements – Interest rate swap, cap and collar agreements are used to manage interest rate risk associated with floating rate borrowings under our Credit Agreement. These agreements involve the receipt of floating rate amounts in exchange for fixed rate interest payments over the term of the agreements without an exchange of the underlying principal amount. The agreements utilized by the Company effectively modify the Company’s exposure to interest rate risk by converting a portion of the Company’s floating rate debt to a fixed rate basis from the effective date through the maturity date of the respective interest rate swap, cap and collar agreements, thereby reducing the impact of interest rate movements on future interest expense.

During the second quarter of fiscal 2023, we entered into LIBOR to Term SOFR basis interest rate swap and cap transactions to effectively convert our existing swaps and cap from LIBOR-based to Term SOFR-based. The basis swaps and cap offset the LIBOR exposure of the existing swaps and cap and effectively fix the Term SOFR rate for the notional amount. We also entered into forward starting interest rate collar agreements during the second quarter of fiscal 2023. The interest rate collar agreements establish a range where we will pay the counterparties if the three-month Term SOFR rate falls below the established floor rate of 2.00%, and the counterparties will pay us if the three-month Term SOFR rate exceeds the ceiling rate of 3.50%. The collar will settle quarterly from the effective date through the maturity date. No payments or receipts will be exchanged on the interest rate collar contracts unless interest rates rise above or fall below the contracted ceiling or floor rates.

During the third quarter of fiscal 2024, we entered into forward starting interest rate collar agreements. The interest rate collar agreements establish a range where we will pay the counterparties if the three-month Term SOFR rate falls below the established floor rate of 2.50%, and the counterparties will pay us if the three-month Term SOFR rate exceeds the ceiling rate of 4.50%. The collar will settle quarterly from the effective date through the maturity date. No payments or receipts will be exchanged on the interest rate collar contracts unless interest rates rise above or fall below the contracted ceiling or floor rates.

The tables below summarize the key terms of the swaps, cap and collars as of March 29, 2025 (aggregated by effective date).

Interest rate swap agreements:

Aggregate Notional Amount (in millions)	Effective Date	Maturity Date	Conversion of Related Variable Rate Debt subject to Term SOFR to Fixed Rate of:
$500	3/31/2023	3/31/2025	6.25% (3.00% plus the 3.25% margin percentage)
$1,500	3/31/2023	3/31/2025	6.35% (3.10% plus the 3.25% margin percentage)
$700	3/31/2023	9/30/2025	4.55% (1.30% plus the 3.25% margin percentage)

Interest rate cap agreement:

Aggregate Notional Amount (in millions)	Effective Date	Maturity Date	Offsets Variable Rate Debt Attributable to Fluctuations Above:
$700	3/31/2023	9/30/2025	Three-month Term SOFR rate of 1.25%

Interest rate collar agreements:

Aggregate Notional Amount (in millions)	Effective Date	Maturity Date	Offsets Variable Rate Debt Attributable to Fluctuations Below and Above:
$1,100	3/31/2025	9/30/2026	Three-month Term SOFR rate of 2.00% (floor) and 3.50% (cap)
$500	9/30/2025	9/30/2026	Three-month Term SOFR rate of 2.00% (floor) and 3.50% (cap)
$1,338	9/30/2025	9/30/2027	Three-month Term SOFR rate of 2.50% (floor) and 4.50% (cap)
$1,550	9/30/2026	9/30/2027	Three-month Term SOFR rate of 2.50% (floor) and 4.50% (cap)

These derivative instruments qualify as effective cash flow hedges under U.S. GAAP. For the LIBOR to Term SOFR basis interest rate swap and cap agreements referenced above, we applied the practical expedients permissible under ASC 848 to continue hedge accounting for our existing swaps and cap as effective cash flow hedges. For our cash flow hedges, the effective portion of the gain or loss from the financial instruments is initially reported as a component of accumulated other comprehensive loss in stockholders’ deficit and subsequently reclassified into earnings in the same line as the hedged item in the same period or periods during which the hedged item affects earnings. As the interest rate swap, cap and collar agreements are used to manage interest rate risk, any gains or losses from the derivative instruments that are reclassified into earnings are recognized in interest expense-net in the condensed consolidated statements of income. Cash flows related to the derivative contracts are included in cash flows from operating activities on the condensed consolidated statements of cash flows.

Certain derivative asset and liability balances are offset where master netting agreements provide for the legal right of setoff. For classification purposes, we record the net fair value of each type of derivative position that is expected to settle in less than one year with each counterparty as a net current asset or liability and each type of long-term position as a net non-current asset or liability. The amounts shown in the table below represent the gross amounts of recognized assets and liabilities, the amounts offset in the condensed consolidated balance sheets and the net amounts of assets and liabilities presented therein (in millions):

	March 29, 2025				September 30, 2024
	Asset		Liability		Asset		Liability
Interest rate cap agreement	$	14	$	—	$	20	$	1
Interest rate collar agreements	9		—		3		8
Interest rate swap agreements	23		1		34		1
Net derivatives as classified in the condensed consolidated balance sheets (1)	$	46	$	1	$	57	$	10

(1)Refer to Note 10, “Fair Value Measurements,” for the condensed consolidated balance sheets classification of the Company's interest rate swap, cap and collar agreements.

Based on the fair value amounts determined as of March 29, 2025, the estimated net amount of existing (gains) losses and caplet amortization expected to be reclassified into interest expense-net within the next twelve months is approximately $(12) million.

Foreign Currency Forward Exchange Contracts – The Company transacts business in various foreign currencies, which subjects the Company’s cash flows and earnings to exposure related to changes in foreign currency exchange rates. These exposures arise primarily from purchases or sales of products and services from third parties. Foreign currency forward exchange contracts provide for the purchase or sale of foreign currencies at specified future dates at specified exchange rates, and are used to offset changes in the fair value of certain assets or liabilities or forecasted cash flows resulting from transactions denominated in foreign currencies. At March 29, 2025, the Company has outstanding foreign currency forward exchange contracts to sell U.S. dollars with notional amounts of $59 million. The maximum duration of the Company’s foreign currency cash flow hedge contracts at March 29, 2025 is six months. These notional values consist of contracts for the Canadian dollar and the euro and are stated in U.S. dollar equivalents at spot exchange rates at the respective trade dates. Amounts related to foreign currency forward exchange contracts included in accumulated other comprehensive loss in stockholders' deficit are reclassified into net sales when the hedged transaction settles. As of March 29, 2025, the Company expects to record a net loss of approximately $2 million on foreign currency forward exchange contracts designated as cash flow hedges to net sales over the next twelve months.

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SEGMENTS

6 Months Ended

Mar. 29, 2025

Segment Reporting [Abstract]

SEGMENTS

SEGMENTS

The Company’s businesses are organized and managed in three reporting segments: Power & Control, Airframe and Non-aviation. Refer to Note 15, “Segments,” in Part IV, Item 15. Exhibits and Financial Statement Schedules, of our Annual Report on Form 10-K for the fiscal year ended September 30, 2024, filed on November 7, 2024, for further information on the composition of the Company's segments.

The primary measurement used by management to review and assess the operating performance of each segment is EBITDA As Defined. The Company defines EBITDA As Defined as earnings before interest, taxes, depreciation and amortization plus certain non-operating items recorded as corporate expenses including non-cash compensation charges incurred in connection with the Company’s stock option or deferred compensation plans, foreign currency gains and losses, acquisition-integration costs, acquisition transaction-related expenses, and refinancing costs. Acquisition transaction and integration-related expenses and adjustments represent costs incurred to integrate acquired businesses into TD Group’s operations; facility relocation costs and other acquisition-related costs; transaction and valuation-related costs for acquisitions comprising deal fees, legal, financial and tax due diligence expenses; amortization expense of inventory step-up recorded in connection with the purchase accounting of acquired businesses.

EBITDA As Defined is not a measurement of financial performance under U.S. GAAP. Although the Company uses EBITDA As Defined to assess the performance of its business and for various other purposes, the use of this non-GAAP financial measure as an analytical tool has limitations, and it should not be considered in isolation or as a substitute for analysis of the Company’s results of operations as reported in accordance with U.S. GAAP.

The Company’s segments are reported on the same basis used internally for evaluating performance and for allocating resources. The accounting policies for each segment are the same as those described in the summary of significant accounting policies in the Company’s consolidated financial statements. Intersegment sales and transfers are recorded at values based on market prices, which creates intercompany profit on intersegment sales or transfers that is eliminated in consolidation. Intersegment sales were immaterial for the periods presented below. Corporate consists of our corporate offices. Corporate expenses consist primarily of compensation, benefits, professional services and other administrative costs incurred by the corporate offices. Corporate assets consist primarily of cash and cash equivalents. Corporate expenses and assets reconcile reportable segment data to the consolidated totals. An immaterial amount of corporate expenses is allocated to the operating segments.

The following table presents net sales by reportable segment (in millions):

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Net sales to external customers
Power & Control
Commercial and non-aerospace OEM	$	238	$	203	$	433	$	382
Commercial and non-aerospace aftermarket	337		295		678		595
Defense	533		422		1,023		833
Total Power & Control	1,108		920		2,134		1,810
Airframe
Commercial and non-aerospace OEM	305		331		583		625
Commercial and non-aerospace aftermarket	356		313		690		615
Defense	341		315		676		581
Total Airframe	1,002		959		1,949		1,821
Total Non-aviation	40		40		73		77
Net Sales	$	2,150	$	1,919	$	4,156	$	3,708

The following table reconciles EBITDA As Defined by segment to consolidated income from operations before income taxes (in millions):

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
EBITDA As Defined
Power & Control	$	636	$	523	$	1,222	$	1,035
Airframe	529		510		1,045		940
Non-aviation	16		16		28		30
Total segment EBITDA As Defined	1,181		1,049		2,295		2,005
Less: Unallocated corporate EBITDA As Defined	19		28		71		72
Total Company EBITDA As Defined	1,162		1,021		2,224		1,933
Depreciation and amortization expense	89		74		179		143
Interest expense-net	378		326		756		626
Acquisition transaction and integration-related expenses	9		14		22		16
Non-cash stock and deferred compensation expense	48		60		73		111
Refinancing costs	—		28		—		28
Other, net	16		—		(47)		1
Income from continuing operations before income taxes	$	622	$	519	$	1,241	$	1,008

The following table presents total assets by segment (in millions):

	March 29, 2025		September 30, 2024
Total assets
Power & Control	$	9,462	$	9,180
Airframe	10,092		10,045
Non-aviation	190		193
Corporate	2,161		6,168
	$	21,905	$	25,586

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ACCUMULATED OTHER COMPREHENSIVE LOSS

6 Months Ended

Mar. 29, 2025

Equity [Abstract]

ACCUMULATED OTHER COMPREHENSIVE LOSS

ACCUMULATED OTHER COMPREHENSIVE LOSS

The following table presents the total changes by component in accumulated other comprehensive loss (“AOCL”), net of taxes, for the twenty-six week periods ended March 29, 2025 and March 30, 2024 (in millions):

	Unrealized gains (losses) on derivatives (1)		Pension and post-retirement benefit plans adjustment (2)		Foreign currency translation adjustment (3)		Total
Balance at September 30, 2024	$	19	$	1	$	(62)	$	(42)
Net current-period other comprehensive loss (4)	(2)		—		(127)		(129)
Balance at March 29, 2025	$	17	$	1	$	(189)	$	(171)
Balance at September 30, 2023	$	143	$	2	$	(243)	$	(98)
Net current-period other comprehensive (loss) income (4)	(51)		—		31		(20)
Balance at March 30, 2024	$	92	$	2	$	(212)	$	(118)

(1)Represents unrealized gains (losses) on derivatives designated and qualifying as cash flow hedges, net of tax (expense) benefit, of $8 million and $(1) million for the thirteen week periods ended March 29, 2025 and March 30, 2024, respectively, and $1 million and $17 million for the twenty-six week periods ended March 29, 2025 and March 30, 2024, respectively.

(2)There were no material pension liability adjustments, net of taxes, related to activity on the defined pension plan and postretirement benefit plan for the thirteen and twenty-six week periods ended March 29, 2025 and March 30, 2024.

(3)Represents gains (losses) resulting from foreign currency translation of financial statements, including gains (losses) from certain intercompany transactions, into U.S. dollars at the rates of exchange in effect at the balance sheet dates.

(4)Presented net of reclassifications out of AOCL into earnings, specifically net sales and interest expense-net, for realized (losses) gains on derivatives designated and qualifying as cash flow hedges of $(1) million (net of taxes of less than $(1) million) and $18 million (net of taxes of $6 million), respectively, for the twenty-six week period ended March 29, 2025 and $(2) million (net of taxes of $(1) million) and $55 million (net of taxes of $17 million), respectively, for the twenty-six week period ended March 30, 2024.

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LEASES

6 Months Ended

Mar. 29, 2025

Leases [Abstract]

Leases

LEASES

The Company leases certain manufacturing facilities, offices, land, equipment and vehicles. Such leases, some of which are noncancellable and, in many cases, include renewals, expire at various dates. Such options to renew are included in the lease term when it is reasonably certain that the option will be exercised. The Company’s lease agreements typically do not contain any significant residual value guarantees or restrictive covenants, and payments within certain lease agreements are adjusted periodically for changes in an index or rate.

The Company determines if an arrangement is a lease at inception. Operating lease assets and liabilities are recognized at the commencement date of the lease based on the present value of lease payments over the lease term. Lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The discount rate implicit within our leases is generally not determinable and therefore we determine the discount rate based on our incremental borrowing rate. The incremental borrowing rate for our leases is determined based on the lease term and the currency in which lease payments are made. The length of a lease term includes options to extend or terminate the lease when it is reasonably certain that the Company will exercise those options. The Company made an accounting policy election to not recognize lease assets or liabilities for leases with a term of twelve months or less. Additionally, when accounting for leases, the Company combines payments for leased assets, related services and other components of a lease.

The components of lease expense are as follows (in millions):

		Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	Classification	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Operating lease cost	Cost of sales or selling and administrative expenses	$	6	$	5	$	12	$	10
Finance lease cost:
Amortization of leased assets	Cost of sales	3		3		7		6
Interest on lease liabilities	Interest expense-net	5		4		9		7
Total lease cost		$	14	$	12	$	28	$	23

Supplemental cash flow information related to leases is as follows (in millions):

	Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	11	$	10
Operating cash outflows from finance leases	8		6
Financing cash outflows from finance leases	4		3
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	2	$	2
Financing leases	17		65

Supplemental balance sheet information related to leases is as follows (in millions):

	Classification	March 29, 2025		September 30, 2024
Operating Leases
Operating lease right-of-use assets	Other non-current assets	$	52	$	61
Current operating lease liabilities	Accrued and other current liabilities	17		19
Long-term operating lease liabilities	Other non-current liabilities	37		43
Total operating lease liabilities		$	54	$	62
Finance Leases
Finance lease right-of-use assets, net	Property, plant and equipment-net	$	255	$	252
Current finance lease liabilities	Current portion of long-term debt	7		6
Long-term finance lease liabilities	Long-term debt	270		256
Total finance lease liabilities		$	277	$	262

As of March 29, 2025, the Company has the following remaining lease term and weighted average discount rates:

Weighted-average remaining lease term
Operating leases	5.4 years
Finance leases	20.5 years
Weighted-average discount rate
Operating leases	6.1%
Finance leases	7.0%

Maturities of lease liabilities at March 29, 2025 are as follows (in millions):

	Operating Leases		Finance Leases
2025	$	19	$	20
2026	14		24
2027	10		24
2028	6		24
2029	4		25
Thereafter	11		445
Total future minimum lease payments	64		562
Less: imputed interest	10		285
Present value of lease liabilities reported	$	54	$	277

Leases

LEASES

The Company leases certain manufacturing facilities, offices, land, equipment and vehicles. Such leases, some of which are noncancellable and, in many cases, include renewals, expire at various dates. Such options to renew are included in the lease term when it is reasonably certain that the option will be exercised. The Company’s lease agreements typically do not contain any significant residual value guarantees or restrictive covenants, and payments within certain lease agreements are adjusted periodically for changes in an index or rate.

The Company determines if an arrangement is a lease at inception. Operating lease assets and liabilities are recognized at the commencement date of the lease based on the present value of lease payments over the lease term. Lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The discount rate implicit within our leases is generally not determinable and therefore we determine the discount rate based on our incremental borrowing rate. The incremental borrowing rate for our leases is determined based on the lease term and the currency in which lease payments are made. The length of a lease term includes options to extend or terminate the lease when it is reasonably certain that the Company will exercise those options. The Company made an accounting policy election to not recognize lease assets or liabilities for leases with a term of twelve months or less. Additionally, when accounting for leases, the Company combines payments for leased assets, related services and other components of a lease.

The components of lease expense are as follows (in millions):

		Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	Classification	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Operating lease cost	Cost of sales or selling and administrative expenses	$	6	$	5	$	12	$	10
Finance lease cost:
Amortization of leased assets	Cost of sales	3		3		7		6
Interest on lease liabilities	Interest expense-net	5		4		9		7
Total lease cost		$	14	$	12	$	28	$	23

Supplemental cash flow information related to leases is as follows (in millions):

	Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	11	$	10
Operating cash outflows from finance leases	8		6
Financing cash outflows from finance leases	4		3
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	2	$	2
Financing leases	17		65

Supplemental balance sheet information related to leases is as follows (in millions):

	Classification	March 29, 2025		September 30, 2024
Operating Leases
Operating lease right-of-use assets	Other non-current assets	$	52	$	61
Current operating lease liabilities	Accrued and other current liabilities	17		19
Long-term operating lease liabilities	Other non-current liabilities	37		43
Total operating lease liabilities		$	54	$	62
Finance Leases
Finance lease right-of-use assets, net	Property, plant and equipment-net	$	255	$	252
Current finance lease liabilities	Current portion of long-term debt	7		6
Long-term finance lease liabilities	Long-term debt	270		256
Total finance lease liabilities		$	277	$	262

As of March 29, 2025, the Company has the following remaining lease term and weighted average discount rates:

Weighted-average remaining lease term
Operating leases	5.4 years
Finance leases	20.5 years
Weighted-average discount rate
Operating leases	6.1%
Finance leases	7.0%

Maturities of lease liabilities at March 29, 2025 are as follows (in millions):

	Operating Leases		Finance Leases
2025	$	19	$	20
2026	14		24
2027	10		24
2028	6		24
2029	4		25
Thereafter	11		445
Total future minimum lease payments	64		562
Less: imputed interest	10		285
Present value of lease liabilities reported	$	54	$	277

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Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Mar. 29, 2025	Dec. 28, 2024	Mar. 30, 2024	Dec. 30, 2023	Mar. 29, 2025	Mar. 30, 2024
Pay vs Performance Disclosure
NET INCOME ATTRIBUTABLE TO TD GROUP	$ 479	$ 493	$ 403	$ 382	$ 972	$ 785

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Insider Trading Arrangements

3 Months Ended

Mar. 29, 2025

shares

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

On March 13, 2025, Sarah Wynne, the Company’s Chief Financial Officer, entered into a new “Rule 10b5-1 trading arrangement” (as defined in Item 408 of Regulation S-K) for the sale of 5,000 shares of common stock issuable upon the exercise of vested options intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act, which Rule 10b5-1 trading arrangement began on March 13, 2025 and terminates no later than December 31, 2025.

Non-Rule 10b5-1 Arrangement Adopted

false

Rule 10b5-1 Arrangement Terminated

false

Non-Rule 10b5-1 Arrangement Terminated

false

Sarah Wynne [Member]

Trading Arrangements, by Individual

Name

Sarah Wynne

Title

Chief Financial Officer

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

March 13, 2025

Expiration Date

December 31, 2025

Arrangement Duration

293 days

Aggregate Available

5,000

XML

BASIS OF PRESENTATION (Policies)

6 Months Ended

Mar. 29, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Principles of Consolidation

Principles of Consolidation

The financial information included herein is unaudited; however, the information reflects all adjustments (consisting of normal recurring adjustments) that are, in the opinion of management, necessary for a fair presentation of the Company’s condensed consolidated financial statements for the interim periods presented. These financial statements and notes should be read in conjunction with the financial statements and related notes for the fiscal year ended September 30, 2024 included in TD Group’s Annual Report on Form 10-K filed on November 7, 2024. As disclosed therein, the Company’s annual consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States (“U.S. GAAP”). The September 30, 2024 condensed consolidated balance sheet was derived from TD Group’s audited financial statements. The results of operations for the twenty-six week period ended March 29, 2025 are not necessarily indicative of the results to be expected for the full year.

Reclassifications

Reclassifications

Certain reclassifications have been made to the prior year amounts to conform to the current year presentation, none of which are material.

New Accounting Pronouncements Issued

New Accounting Pronouncements Issued

In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” ASU 2023-07 expands disclosures about a public business entity's reportable segments and provides for more detailed information about a reportable segment's expenses. Additionally, ASU 2023-07 requires all segment profit or loss and assets disclosures to be provided on an annual and interim basis. This standard is effective for annual periods beginning after December 15, 2023 (fiscal 2025) and interim periods within fiscal years beginning one year later (fiscal 2026). The Company plans to adopt this standard beginning with our fiscal 2025 Form 10-K. While we expect the adoption of this standard will expand our disclosures within the “Segments” note, we do not expect it to have any impact on our consolidated financial statements.

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires a public business entity to disclose specific categories in its annual effective tax rate reconciliation and disaggregated information about significant reconciling items by jurisdiction and by nature. The ASU also requires entities to disclose their income tax payments (net of refunds) to international, federal, and state and local jurisdictions. The standard makes several other changes to income tax disclosure requirements. This standard is effective for annual periods beginning after December 15, 2024 (fiscal 2026), and requires prospective application with the option to apply it retrospectively. Early adoption is permitted. The Company is currently evaluating this standard to determine its impact on our disclosures.

In November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses.” Additionally, in January 2025, the FASB issued ASU 2025-01 to clarify the effective date of ASU 2024-03. The standard requires, among other items, additional disaggregated disclosures in the notes to financial statements for certain categories of expenses that are included on the face of the statement of income. The standard is effective for fiscal years beginning after December 15, 2026 (fiscal 2028), and for interim periods within fiscal years beginning after December 15, 2027 (fiscal 2029), on a retrospective or prospective basis, with early adoption permitted. The Company is currently evaluating this standard to determine its impact on our disclosures.

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ACQUISITIONS (Tables)

6 Months Ended

Mar. 29, 2025

Business Combinations [Abstract]

Schedule of Business Acquisitions, by Acquisition

The allocation of the estimated fair value of assets acquired and liabilities assumed in the acquisition of Raptor Scientific as of the July 31, 2024 acquisition date, as well as measurement period adjustments recorded within the permissible one year measurement period, is summarized in the table below (in millions):

	Preliminary		Measurement Period		Adjusted Preliminary
	Allocation		Adjustments (2)		Allocation
Assets acquired (excluding cash):
Trade accounts receivable	$	9	$	—	$	9
Inventories	22		(1)		21
Prepaid expenses and other	4		—		4
Property, plant and equipment	2		—		2
Goodwill	426		(61)		365		(1)
Other intangible assets	197		67		264		(1)
Other non-current assets	5		—		5
Total assets acquired (excluding cash)	665		5		670
Liabilities assumed:
Accounts payable	1		—		1
Accrued and other current liabilities	13		3		16
Deferred income taxes	—		3		3
Other non-current liabilities	4		—		4
Total liabilities assumed	18		6		24
Net assets acquired	$	647	$	(1)	$	646

(1)Of the approximately $365 million of goodwill recognized for the acquisition, the Company expects that approximately $350 million of goodwill will be deductible for tax purposes. Of the approximately $264 million of other intangible assets recognized for the acquisition, the Company expects that approximately $251 million will be deductible for tax purposes. The goodwill and intangible assets are expected to be deductible over 15 years.

(2)Measurement period adjustments primarily related to the adjustments in the fair values of the acquired other intangible assets from the third-party valuation. The offset to the measurement period adjustments was to goodwill.

The allocation of the estimated fair value of assets acquired and liabilities assumed in the acquisition of CPI's Electron Device Business as of the June 6, 2024 acquisition date, as well as measurement period adjustments recorded within the permissible one year measurement period, is summarized in the table below (in millions):

	Preliminary		Measurement Period		Adjusted Preliminary
	Allocation		Adjustments (2)		Allocation
Assets acquired (excluding cash):
Trade accounts receivable	$	40	$	—	$	40
Inventories	81		(1)		80
Prepaid expenses and other	64		(1)		63
Property, plant and equipment	137		31		168
Goodwill	844		(92)		752		(1)
Other intangible assets	368		141		509		(1)
Other non-current assets	15		(14)		1
Total assets acquired (excluding cash)	1,549		64		1,613
Liabilities assumed:
Accounts payable	18		(1)		17
Accrued and other current liabilities	45		19		64
Deferred income taxes	89		55		144
Other non-current liabilities	12		(10)		2
Total liabilities assumed	164		63		227
Net assets acquired	$	1,385	$	1	$	1,386

(1)None of the approximately $752 million of goodwill and $509 million of other intangible assets recognized for the acquisition is expected to be deductible for tax purposes.

(2)Measurement period adjustments primarily related to the adjustments in the fair values of the acquired property, plant and equipment and other intangible assets from the third-party valuation and related impact on deferred income taxes. The offset to the measurement period adjustments was to goodwill.

The allocation of the estimated fair value of assets acquired and liabilities assumed in the SEI acquisition as of the May 21, 2024 acquisition date, as well as measurement period adjustments recorded within the permissible one year measurement period, is summarized in the table below (in millions):

	Preliminary		Measurement Period		Adjusted Preliminary
	Allocation		Adjustments (2)		Allocation
Assets acquired (excluding cash):
Trade accounts receivable	$	2	$	2	$	4
Inventories	11		—		11
Prepaid expenses and other	—		1		1
Property, plant and equipment	1		—		1
Goodwill	109		(6)		103		(1)
Other intangible assets	68		7		75		(1)
Total assets acquired (excluding cash)	191		4		195
Liabilities assumed:
Accounts payable	1		1		2
Accrued and other current liabilities	1		—		1
Deferred income taxes	19		2		21
Total liabilities assumed	21		3		24
Net assets acquired	$	170	$	1	$	171

(1)None of the approximately $103 million of goodwill and $75 million of other intangible assets recognized for the acquisition is expected to be deductible for tax purposes.

(2)Measurement period adjustments primarily related to the adjustments in the fair values of the acquired other intangible assets from the third-party valuation. The offset to the measurement period adjustments was to goodwill.

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REVENUE RECOGNITION (Tables)

6 Months Ended

Mar. 29, 2025

Revenue from Contract with Customer [Abstract]

Contract with Customer, Asset and Liability [Table Text Block]

	March 29, 2025		September 30, 2024
Contract assets, current (1)	$	250	$	270
Contract assets, non-current (2)	65		31
Total contract assets	315		301
Contract liabilities, current (3)	141		168
Contract liabilities, non-current (4)	8		9
Total contract liabilities	149		177
Net contract assets	$	166	$	124

(1)Included in prepaid expenses and other on the condensed consolidated balance sheets.

(2)Included in other non-current assets on the condensed consolidated balance sheets.

(3)Included in accrued and other current liabilities on the condensed consolidated balance sheets.

(4)Included in other non-current liabilities on the condensed consolidated balance sheets.

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EARNINGS PER SHARE (Tables)

6 Months Ended

Mar. 29, 2025

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share (in millions, except per share data) using the two-class method:

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Numerator for earnings per share:
Net income	$	479	$	404	$	972	$	786
Less: Net income attributable to noncontrolling interests	—		(1)		—		(1)
Net income attributable to TD Group	479		403		972		785
Less: Dividends paid on participating securities	—		—		(49)		(101)
Net income applicable to TD Group common stockholders—basic and diluted	$	479	$	403	$	923	$	684
Denominator for basic and diluted earnings per share under the two-class method:
Weighted-average common shares outstanding	56.1		55.7		56.2		55.6
Vested options deemed participating securities	2.0		2.1		2.0		2.2
Total shares for basic and diluted earnings per share	58.1		57.8		58.2		57.8
Earnings per share—basic and diluted	$	8.24	$	6.97	$	15.86	$	11.83

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INVENTORIES (Tables)

6 Months Ended

Mar. 29, 2025

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following (in millions):

	March 29, 2025		September 30, 2024
Raw materials and purchased component parts	$	1,460	$	1,314
Work-in-progress	528		508
Finished goods	269		290
Total	2,257		2,112
Reserves for excess and obsolete inventory	(247)		(236)
Inventories—Net	$	2,010	$	1,876

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INTANGIBLE ASSETS (Tables)

6 Months Ended

Mar. 29, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets Subject to Amortization

Other intangible assets–net in the condensed consolidated balance sheets consist of the following (in millions):

	March 29, 2025						September 30, 2024
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Trademarks and trade names	$	1,141	$	—	$	1,141	$	1,165	$	—	$	1,165
Technology	2,573		1,061		1,512		2,510		1,003		1,507
Order backlog	48		17		31		61		13		48
Customer relationships	930		197		733		895		175		720
Other	11		6		5		12		6		6
Total	$	4,703	$	1,281	$	3,422	$	4,643	$	1,197	$	3,446

Summary of Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination

Intangible assets acquired during the twenty-six week period ended March 29, 2025 are summarized in the table below (in millions):

	Gross Amount		Amortization Period
Intangible assets not subject to amortization:
Goodwill	$	60
Trademarks and trade names	1
	61
Intangible assets subject to amortization:
Technology	24		10 years
Order backlog	4		1 year
Customer relationships	8		10 years
	36
Total	$	97

Summary of Changes in Carrying Value of Goodwill

The following is a summary of changes in the carrying value of goodwill by segment from September 30, 2024 through March 29, 2025 (in millions):

	Power & Control		Airframe		Non-aviation		Total
Balance at September 30, 2024	$	5,020	$	5,306	$	93	$	10,419
Goodwill acquired during the period	60		—		—		60
Purchase price allocation adjustments (1)	6		(61)		—		(55)
Currency translation adjustments and other	(21)		(39)		(9)		(69)
Balance at March 29, 2025	$	5,065	$	5,206	$	84	$	10,355

(1)Primarily related to the opening balance sheet adjustments recorded from the acquisition of Raptor Scientific (Airframe) completed during the fourth quarter of fiscal 2024 and CPI's Electron Device Business (Power & Control) completed during the third quarter of fiscal 2024, within the allowable measurement period (not to exceed one year). Refer to Note 2, “Acquisitions,” for further information.

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DEBT (Tables)

6 Months Ended

Mar. 29, 2025

Debt Disclosure [Abstract]

Schedule of Debt

The Company’s debt consists of the following (in millions):

	March 29, 2025
	Gross Amount		Debt Issuance Costs		Original Issue Discount		Net Amount
Short-term borrowings—trade receivable securitization facility	$	650	$	(1)	$	—	$	649
Term loans	$	8,680	$	(23)	$	(31)	$	8,626
5.50% senior subordinated notes due 2027 (“5.50% 2027 Notes”)	2,650		(8)		—		2,642
6.75% secured notes due 2028 (“2028 Secured Notes”)	2,100		(13)		(7)		2,080
4.625% senior subordinated notes due 2029 (“4.625% 2029 Notes”)	1,200		(5)		—		1,195
6.375% secured notes due 2029 (“2029 Secured Notes”)	2,750		(20)		(1)		2,729
4.875% senior subordinated notes due 2029 (“4.875% 2029 Notes”)	750		(4)		—		746
6.875% secured notes due 2030 (“2030 Secured Notes”)	1,450		(11)		—		1,439
7.125% secured notes due 2031 (“2031 Secured Notes”)	1,000		(8)		(6)		986
6.625% secured notes due 2032 (“2032 Secured Notes”)	2,200		(18)		—		2,182
6.00% secured notes due 2033 (“2033 Secured Notes”)	1,500		(13)		—		1,487
Government refundable advances	11		—		—		11
Finance lease obligations	277		—		—		277
	24,568		(123)		(45)		24,400
Less: current portion	94		—		—		94
Long-term debt	$	24,474	$	(123)	$	(45)	$	24,306

	September 30, 2024
	Gross Amount		Debt Issuance Costs		Original Issue Discount		Net Amount
Short-term borrowings—trade receivable securitization facility	$	487	$	(1)	$	—	$	486
Term loans	$	8,702	$	(25)	$	(35)	$	8,642
5.50% 2027 Notes	2,650		(9)		—		2,641
2028 Secured Notes	2,100		(15)		(8)		2,077
4.625% 2029 Notes	1,200		(6)		—		1,194
2029 Secured Notes	2,750		(22)		(1)		2,727
4.875% 2029 Notes	750		(4)		—		746
2030 Secured Notes	1,450		(12)		—		1,438
2031 Secured Notes	1,000		(9)		(7)		984
2032 Secured Notes	2,200		(20)		—		2,180
2033 Secured Notes	1,500		(14)		—		1,486
Government refundable advances	17		—		—		17
Finance lease obligations	262		—		—		262
	24,581		(136)		(51)		24,394
Less: current portion	99		(1)		—		98
Long-term debt	$	24,482	$	(135)	$	(51)	$	24,296

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Mar. 29, 2025

Fair Value Disclosures [Abstract]

Carrying Amounts and Fair Values of Financial Instruments

		March 29, 2025				September 30, 2024
	Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	2,426	$	2,426	$	6,261	$	6,261
Interest rate swap agreements (1)	2	23		23		34		34
Interest rate cap agreements (1)	2	14		14		20		20
Foreign currency forward exchange contracts (1)	2	—		—		3		3
Interest rate collar agreements (2)	2	9		9		3		3
Liabilities:
Interest rate swap agreements (3)	2	1		1		1		1
Interest rate cap agreements (3)	2	—		—		1		1
Foreign currency forward exchange contracts (3)	2	2		2		—		—
Interest rate collar agreements (4)	2	—		—		8		8
Short-term borrowings - trade receivable securitization facility (5)	2	649		649		486		486
Long-term debt, including current portion:
Term loans (5)	2	8,626		8,664		8,642		8,694
5.50% 2027 Notes (5)	1	2,642		2,617		2,641		2,637
2028 Secured Notes (5)	1	2,080		2,129		2,077		2,160
4.625% 2029 Notes (5)	1	1,195		1,137		1,194		1,160
2029 Secured Notes (5)	1	2,729		2,778		2,727		2,836
4.875% 2029 Notes (5)	1	746		712		746		729
2030 Secured Notes (5)	1	1,439		1,483		1,438		1,519
2031 Secured Notes (5)	1	986		1,029		984		1,058
2032 Secured Notes (5)	1	2,182		2,228		2,180		2,291
2033 Secured Notes (5)	1	1,487		1,476		1,486		1,521
Government refundable advances	2	11		11		17		17
Finance lease obligations	2	277		276		262		262

(1)Included in prepaid expenses and other on the condensed consolidated balance sheets.

(2)Included in other non-current assets on the condensed consolidated balance sheets.

(3)Included in accrued and other current liabilities on the condensed consolidated balance sheets.

(4)Included in other non-current liabilities on the condensed consolidated balance sheets.

(5)The carrying amount of the debt instrument is presented net of debt issuance costs and original issue discount. Refer to Note 8, “Debt,” for gross carrying amounts.

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DERIVATIVES AND HEDGING ACTIVITIES (Tables)

6 Months Ended

Mar. 29, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

Interest rate swap agreements:

Aggregate Notional Amount (in millions)	Effective Date	Maturity Date	Conversion of Related Variable Rate Debt subject to Term SOFR to Fixed Rate of:
$500	3/31/2023	3/31/2025	6.25% (3.00% plus the 3.25% margin percentage)
$1,500	3/31/2023	3/31/2025	6.35% (3.10% plus the 3.25% margin percentage)
$700	3/31/2023	9/30/2025	4.55% (1.30% plus the 3.25% margin percentage)

Interest rate cap agreement:

Aggregate Notional Amount (in millions)	Effective Date	Maturity Date	Offsets Variable Rate Debt Attributable to Fluctuations Above:
$700	3/31/2023	9/30/2025	Three-month Term SOFR rate of 1.25%

Interest rate collar agreements:

Aggregate Notional Amount (in millions)	Effective Date	Maturity Date	Offsets Variable Rate Debt Attributable to Fluctuations Below and Above:
$1,100	3/31/2025	9/30/2026	Three-month Term SOFR rate of 2.00% (floor) and 3.50% (cap)
$500	9/30/2025	9/30/2026	Three-month Term SOFR rate of 2.00% (floor) and 3.50% (cap)
$1,338	9/30/2025	9/30/2027	Three-month Term SOFR rate of 2.50% (floor) and 4.50% (cap)
$1,550	9/30/2026	9/30/2027	Three-month Term SOFR rate of 2.50% (floor) and 4.50% (cap)

Schedule of Interest Rate Derivatives

	March 29, 2025				September 30, 2024
	Asset		Liability		Asset		Liability
Interest rate cap agreement	$	14	$	—	$	20	$	1
Interest rate collar agreements	9		—		3		8
Interest rate swap agreements	23		1		34		1
Net derivatives as classified in the condensed consolidated balance sheets (1)	$	46	$	1	$	57	$	10

(1)Refer to Note 10, “Fair Value Measurements,” for the condensed consolidated balance sheets classification of the Company's interest rate swap, cap and collar agreements.

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SEGMENTS (Tables)

6 Months Ended

Mar. 29, 2025

Segment Reporting [Abstract]

Net Sales by Reportable Segments

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Net sales to external customers
Power & Control
Commercial and non-aerospace OEM	$	238	$	203	$	433	$	382
Commercial and non-aerospace aftermarket	337		295		678		595
Defense	533		422		1,023		833
Total Power & Control	1,108		920		2,134		1,810
Airframe
Commercial and non-aerospace OEM	305		331		583		625
Commercial and non-aerospace aftermarket	356		313		690		615
Defense	341		315		676		581
Total Airframe	1,002		959		1,949		1,821
Total Non-aviation	40		40		73		77
Net Sales	$	2,150	$	1,919	$	4,156	$	3,708

EBITDA Defined by Segment to Consolidated Income Before Taxes

The following table reconciles EBITDA As Defined by segment to consolidated income from operations before income taxes (in millions):

	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
EBITDA As Defined
Power & Control	$	636	$	523	$	1,222	$	1,035
Airframe	529		510		1,045		940
Non-aviation	16		16		28		30
Total segment EBITDA As Defined	1,181		1,049		2,295		2,005
Less: Unallocated corporate EBITDA As Defined	19		28		71		72
Total Company EBITDA As Defined	1,162		1,021		2,224		1,933
Depreciation and amortization expense	89		74		179		143
Interest expense-net	378		326		756		626
Acquisition transaction and integration-related expenses	9		14		22		16
Non-cash stock and deferred compensation expense	48		60		73		111
Refinancing costs	—		28		—		28
Other, net	16		—		(47)		1
Income from continuing operations before income taxes	$	622	$	519	$	1,241	$	1,008

Total Assets by Segment

The following table presents total assets by segment (in millions):

	March 29, 2025		September 30, 2024
Total assets
Power & Control	$	9,462	$	9,180
Airframe	10,092		10,045
Non-aviation	190		193
Corporate	2,161		6,168
	$	21,905	$	25,586

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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

6 Months Ended

Mar. 29, 2025

Equity [Abstract]

Schedule of Reclassifications out of Accumulated Other Comprehensive Loss

The following table presents the total changes by component in accumulated other comprehensive loss (“AOCL”), net of taxes, for the twenty-six week periods ended March 29, 2025 and March 30, 2024 (in millions):

	Unrealized gains (losses) on derivatives (1)		Pension and post-retirement benefit plans adjustment (2)		Foreign currency translation adjustment (3)		Total
Balance at September 30, 2024	$	19	$	1	$	(62)	$	(42)
Net current-period other comprehensive loss (4)	(2)		—		(127)		(129)
Balance at March 29, 2025	$	17	$	1	$	(189)	$	(171)
Balance at September 30, 2023	$	143	$	2	$	(243)	$	(98)
Net current-period other comprehensive (loss) income (4)	(51)		—		31		(20)
Balance at March 30, 2024	$	92	$	2	$	(212)	$	(118)

(1)Represents unrealized gains (losses) on derivatives designated and qualifying as cash flow hedges, net of tax (expense) benefit, of $8 million and $(1) million for the thirteen week periods ended March 29, 2025 and March 30, 2024, respectively, and $1 million and $17 million for the twenty-six week periods ended March 29, 2025 and March 30, 2024, respectively.

(2)There were no material pension liability adjustments, net of taxes, related to activity on the defined pension plan and postretirement benefit plan for the thirteen and twenty-six week periods ended March 29, 2025 and March 30, 2024.

(3)Represents gains (losses) resulting from foreign currency translation of financial statements, including gains (losses) from certain intercompany transactions, into U.S. dollars at the rates of exchange in effect at the balance sheet dates.

(4)Presented net of reclassifications out of AOCL into earnings, specifically net sales and interest expense-net, for realized (losses) gains on derivatives designated and qualifying as cash flow hedges of $(1) million (net of taxes of less than $(1) million) and $18 million (net of taxes of $6 million), respectively, for the twenty-six week period ended March 29, 2025 and $(2) million (net of taxes of $(1) million) and $55 million (net of taxes of $17 million), respectively, for the twenty-six week period ended March 30, 2024.

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LEASES (Tables)

6 Months Ended

Mar. 29, 2025

Leases [Abstract]

Lease, Cost

The components of lease expense are as follows (in millions):

		Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	Classification	March 29, 2025		March 30, 2024		March 29, 2025		March 30, 2024
Operating lease cost	Cost of sales or selling and administrative expenses	$	6	$	5	$	12	$	10
Finance lease cost:
Amortization of leased assets	Cost of sales	3		3		7		6
Interest on lease liabilities	Interest expense-net	5		4		9		7
Total lease cost		$	14	$	12	$	28	$	23

Schedule of Cash Flow, Supplemental Disclosures

Supplemental cash flow information related to leases is as follows (in millions):

	Twenty-Six Week Periods Ended
	March 29, 2025		March 30, 2024
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	11	$	10
Operating cash outflows from finance leases	8		6
Financing cash outflows from finance leases	4		3
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	2	$	2
Financing leases	17		65

Leases, Supplemental Balance Sheet Information

Supplemental balance sheet information related to leases is as follows (in millions):

	Classification	March 29, 2025		September 30, 2024
Operating Leases
Operating lease right-of-use assets	Other non-current assets	$	52	$	61
Current operating lease liabilities	Accrued and other current liabilities	17		19
Long-term operating lease liabilities	Other non-current liabilities	37		43
Total operating lease liabilities		$	54	$	62
Finance Leases
Finance lease right-of-use assets, net	Property, plant and equipment-net	$	255	$	252
Current finance lease liabilities	Current portion of long-term debt	7		6
Long-term finance lease liabilities	Long-term debt	270		256
Total finance lease liabilities		$	277	$	262

As of March 29, 2025, the Company has the following remaining lease term and weighted average discount rates:

Weighted-average remaining lease term
Operating leases	5.4 years
Finance leases	20.5 years
Weighted-average discount rate
Operating leases	6.1%
Finance leases	7.0%

Lessee, Operating Lease, Liability, Maturity

Maturities of lease liabilities at March 29, 2025 are as follows (in millions):

	Operating Leases		Finance Leases
2025	$	19	$	20
2026	14		24
2027	10		24
2028	6		24
2029	4		25
Thereafter	11		445
Total future minimum lease payments	64		562
Less: imputed interest	10		285
Present value of lease liabilities reported	$	54	$	277

Finance Lease, Liability, Maturity

Maturities of lease liabilities at March 29, 2025 are as follows (in millions):

	Operating Leases		Finance Leases
2025	$	19	$	20
2026	14		24
2027	10		24
2028	6		24
2029	4		25
Thereafter	11		445
Total future minimum lease payments	64		562
Less: imputed interest	10		285
Present value of lease liabilities reported	$	54	$	277

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ACQUISITIONS - Raptor Scientific (Details) (Details) - USD ($) $ in Millions			6 Months Ended		8 Months Ended
		Jul. 31, 2024	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Sep. 30, 2024
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired			$ 140	$ 87
Assets acquired (excluding cash):
GOODWILL			10,355		$ 10,355	$ 10,419
Purchase price allocation adjustments	[1]		(55)
Raptor Scientific
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired		$ 646
Business combination, working capital settlement		1
Assets acquired (excluding cash):
Trade accounts receivable		9	9		9
Trade accounts receivable, measurement period adjustments					0
Inventories		22	21		21
Inventory, measurement period adjustments					(1)
Prepaid expenses and other		4	4		4
Prepaid expenses and other, measurement period adjustments					0
Property, plant and equipment		2	2		2
Property, plant and equipment, measurement period adjustments					0
GOODWILL		426	365		365
Purchase price allocation adjustments					(61)
Other intangible assets		197	264		264
Other intangible assets, measurement period adjustments					67
Other non-current assets		5	5		5
Other non-current assets, measurement period adjustments					0
Total assets acquired (excluding cash)		665	670		670
Total assets acquired (excluding cash), measurement period adjustments					5
Liabilities assumed:
Accounts payable		1	1		1
Accounts payable, measurement period adjustments					0
Accrued and other current liabilities		13	16		16
Accrued and other current liabilities, measurement period adjustments					3
Deferred income taxes		0	3		3
Deferred income taxes, measurement period adjustments					3
Other non-current liabilities		4	4		4
Other non-current liabilities, measurement period adjustments					0
Total liabilities assumed		18	24		24
Total liabilities assumed, measurement period adjustments					6
Net assets acquired		$ 647	646		646
Net assets acquired, measurement period adjustments					(1)
Amount of goodwill expected to be tax deductible			350		350
Business acquisition, intangible assets, expected tax deductible amount			$ 251		$ 251
Goodwill and intangible assets, deductible for tax purposes, term		15 years

[1] Primarily related to the opening balance sheet adjustments recorded from the acquisition of Raptor Scientific (Airframe) completed during the fourth quarter of fiscal 2024 and CPI's Electron Device Business (Power & Control) completed during the third quarter of fiscal 2024, within the allowable measurement period (not to exceed one year). Refer to Note 2, “Acquisitions,” for further information.

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ACQUISITIONS - CPI's Electron Device Business (Details) - USD ($) $ in Millions			6 Months Ended		10 Months Ended
		Jun. 06, 2024	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Sep. 30, 2024
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired			$ 140	$ 87
Assets acquired (excluding cash):
GOODWILL			10,355		$ 10,355	$ 10,419
Purchase price allocation adjustments	[1]		(55)
CPI Electron Device Business
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired		$ 1,386
Business combination, working capital settlement		1
Assets acquired (excluding cash):
Trade accounts receivable		40	40		40
Trade accounts receivable, measurement period adjustments					0
Inventories		81	80		80
Inventory, measurement period adjustments					(1)
Prepaid expenses and other		64	63		63
Prepaid expenses and other, measurement period adjustments					(1)
Property, plant and equipment		137	168		168
Property, plant and equipment, measurement period adjustments					31
GOODWILL		844	752		752
Purchase price allocation adjustments					(92)
Other intangible assets		368	509		509
Other intangible assets, measurement period adjustments					141
Other non-current assets		15	1		1
Other non-current assets, measurement period adjustments					(14)
Total assets acquired (excluding cash)		1,549	1,613		1,613
Total assets acquired (excluding cash), measurement period adjustments					64
Liabilities assumed:
Accounts payable		18	17		17
Accounts payable, measurement period adjustments					(1)
Accrued and other current liabilities		45	64		64
Accrued and other current liabilities, measurement period adjustments					19
Deferred income taxes		89	144		144
Deferred income taxes, measurement period adjustments					55
Other non-current liabilities		12	2		2
Other non-current liabilities, measurement period adjustments					(10)
Total liabilities assumed		164	227		227
Total liabilities assumed, measurement period adjustments					63
Net assets acquired		$ 1,385	1,386		1,386
Net assets acquired, measurement period adjustments					1
Amount of goodwill expected to be tax deductible			0		0
Business acquisition, intangible assets, expected tax deductible amount			$ 0		$ 0

[1] Primarily related to the opening balance sheet adjustments recorded from the acquisition of Raptor Scientific (Airframe) completed during the fourth quarter of fiscal 2024 and CPI's Electron Device Business (Power & Control) completed during the third quarter of fiscal 2024, within the allowable measurement period (not to exceed one year). Refer to Note 2, “Acquisitions,” for further information.

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ACQUISITIONS - SEI Industries LTD (Details) - USD ($) $ in Millions			6 Months Ended		10 Months Ended
		May 21, 2024	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Sep. 30, 2024
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired			$ 140	$ 87
Assets acquired (excluding cash):
GOODWILL			10,355		$ 10,355	$ 10,419
Purchase price allocation adjustments	[1]		(55)
SEI Industries LTD
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired		$ 171
Business combination, working capital settlement		1
Assets acquired (excluding cash):
Trade accounts receivable		2	4		4
Trade accounts receivable, measurement period adjustments					2
Inventories		11	11		11
Inventory, measurement period adjustments					0
Prepaid expenses and other		0	1		1
Prepaid expenses and other, measurement period adjustments					1
Property, plant and equipment		1	1		1
Property, plant and equipment, measurement period adjustments					0
GOODWILL		109	103		103
Purchase price allocation adjustments					(6)
Other intangible assets		68	75		75
Other intangible assets, measurement period adjustments					7
Total assets acquired (excluding cash)		191	195		195
Total assets acquired (excluding cash), measurement period adjustments					4
Liabilities assumed:
Accounts payable		1	2		2
Accounts payable, measurement period adjustments					1
Accrued and other current liabilities		1	1		1
Accrued and other current liabilities, measurement period adjustments					0
Deferred income taxes		19	21		21
Deferred income taxes, measurement period adjustments					2
Total liabilities assumed		21	24		24
Total liabilities assumed, measurement period adjustments					3
Net assets acquired		$ 170	$ 171		171
Net assets acquired, measurement period adjustments					$ 1

[1] Primarily related to the opening balance sheet adjustments recorded from the acquisition of Raptor Scientific (Airframe) completed during the fourth quarter of fiscal 2024 and CPI's Electron Device Business (Power & Control) completed during the third quarter of fiscal 2024, within the allowable measurement period (not to exceed one year). Refer to Note 2, “Acquisitions,” for further information.

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ACQUISITIONS - FPT Industries LLC (Details) - USD ($) $ in Millions		6 Months Ended
	Mar. 01, 2024	Mar. 29, 2025	Mar. 30, 2024	Sep. 30, 2024
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired		$ 140	$ 87
GOODWILL		$ 10,355		$ 10,419
Minimum
Business Acquisition [Line Items]
Air transportation equipment estimated useful Life		25 years
Maximum
Business Acquisition [Line Items]
Air transportation equipment estimated useful Life		30 years
FPT Industries LLC
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired	$ 57
Amount of goodwill expected to be tax deductible	9
GOODWILL	$ 35
Goodwill and intangible assets, expected tax deductible amount, period of deduction	15 years
Business acquisition, intangible assets, expected tax deductible amount	$ 19

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ACQUISITIONS - Extant Aerospace Acquisitions (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Sep. 30, 2024
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired	$ 140	$ 87
Series of Individually Immaterial Business Acquisitions | Extant Aerospace
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired	113		$ 86
Other intangible assets	$ 33		$ 22
Goodwill and intangible assets, deductible for tax purposes, term	15 years		15 years
Amount of goodwill expected to be tax deductible	$ 43		$ 40

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REVENUE RECOGNITION - Contract Assets and Liabilities (Details) - USD ($) $ in Millions		Mar. 29, 2025	Sep. 30, 2024
Schedule of Contract Assets and Liabilities [Line Items]
Total contract assets		$ 315	$ 301
Total contract liabilities		149	177
Net Contract Asset		166	124
Prepaid Expenses and Other Current Assets
Schedule of Contract Assets and Liabilities [Line Items]
Contract assets, current	[1]	250	270
Other non-current assets
Schedule of Contract Assets and Liabilities [Line Items]
Contract assets, non-current	[2]	65	31
Accrued and Other Current Liabilities
Schedule of Contract Assets and Liabilities [Line Items]
Contract liabilities, current	[3]	141	168
Other non-current liabilities
Schedule of Contract Assets and Liabilities [Line Items]
Contract liabilities, non-current	[4]	$ 8	$ 9

[1] Included in prepaid expenses and other on the condensed consolidated balance sheets.

[2] Included in other non-current assets on the condensed consolidated balance sheets.

[3] Included in accrued and other current liabilities on the condensed consolidated balance sheets.

[4] Included in other non-current liabilities on the condensed consolidated balance sheets.

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REVENUE RECOGNITION - Allowance for Credit Losses (Details) - USD ($) $ in Millions	6 Months Ended
	Mar. 29, 2025	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue recognized	$ 102
Allowance for uncollectible accounts	$ 31	$ 32

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EARNINGS PER SHARE - Computation of Basic and Diluted EPS (two-class method) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Numerator for earnings per share:
Net income	$ 479	$ 404	$ 972	$ 786
Less: Net income attributable to noncontrolling interests	0	1	0	1
Net income attributable to TD Group	479	403	972	785
Less: Dividends paid on participating securities	0	0	(49)	(101)
Net income applicable to TD Group common stockholders—basic and diluted	$ 479	$ 403	$ 923	$ 684
Denominator for basic and diluted earnings per share under the two-class method:
Weighted-average common shares outstanding - basic (in shares)	56.1	55.7	56.2	55.6
Weighted-average common shares outstanding - diluted (in shares)	56.1	55.7	56.2	55.6
Vested options deemed participating securities	2.0	2.1	2.0	2.2
Weighted-average shares outstanding - basic (in shares)	58.1	57.8	58.2	57.8
Weighted-average shares outstanding - diluted (in shares)	58.1	57.8	58.2	57.8
Earnings per share - basic (in usd per share)	$ 8.24	$ 6.97	$ 15.86	$ 11.83
Earnings per share - diluted (in usd per share)	$ 8.24	$ 6.97	$ 15.86	$ 11.83

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STOCK REPURCHASE PROGRAM (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2025	Mar. 29, 2025	Dec. 28, 2024	Mar. 29, 2025	Jan. 27, 2022	Nov. 08, 2017
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount					$ 2,200,000,000	$ 650,000,000
Stock repurchases under repurchase program		$ 53,000,000	$ 316,000,000	$ 369,000,000
Stock repurchases under repurchase program (in shares)		42,669		295,469
Stock repurchase program, average price (in dollars per share)		$ 1,249.52		$ 1,248.78
Stock repurchase program, remaining authorized repurchase amount		$ 919,000,000		$ 919,000,000
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Stock repurchases under repurchase program	$ 131,000,000
Stock repurchases under repurchase program (in shares)	105,567
Stock repurchase program, average price (in dollars per share)	$ 1,240.91

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INVENTORIES - Schedule of Inventories (Details) - USD ($) $ in Millions	Mar. 29, 2025	Sep. 30, 2024
Inventory Disclosure [Abstract]
Raw materials and purchased component parts	$ 1,460	$ 1,314
Work-in-progress	528	508
Finished goods	269	290
Total	2,257	2,112
Reserves for excess and obsolete inventory	(247)	(236)
Inventories—Net	$ 2,010	$ 1,876

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INTANGIBLE ASSETS - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	Mar. 29, 2025	Sep. 30, 2024
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 4,703	$ 4,643
Intangible Assets, Accumulated Amortization	1,281	1,197
Total	3,422	3,446
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,573	2,510
Accumulated Amortization	1,061	1,003
Net	1,512	1,507
Order backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	48	61
Accumulated Amortization	17	13
Net	31	48
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	930	895
Accumulated Amortization	197	175
Net	733	720
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11	12
Accumulated Amortization	6	6
Net	5	6
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill), Gross	1,141	1,165
Intangible Assets (Excluding Goodwill), Net	$ 1,141	$ 1,165

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INTANGIBLE ASSETS - Finite and Indefinite-Lived Intangible Assets (Details) $ in Millions	6 Months Ended
	Mar. 29, 2025 USD ($)
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired	$ 61
Finite-lived Intangible Assets Acquired	36
Intangible Assets Acquired	97
Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 24
Finite-Lived Intangible Assets, Remaining Amortization Period	10 years
Order backlog
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 4
Finite-Lived Intangible Assets, Remaining Amortization Period	1 year
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 8
Finite-Lived Intangible Assets, Remaining Amortization Period	10 years
Goodwill
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired	$ 60
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired	$ 1

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INTANGIBLE ASSETS - Aggregate Amortization Expense on Identifiable Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
AMORTIZATION OF INTANGIBLE ASSETS	$ 47	$ 37	$ 97	$ 72

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INTANGIBLE ASSETS - Summary of Changes in Carrying Value of Goodwill (by Segment) (Details) $ in Millions	6 Months Ended
	Mar. 29, 2025 USD ($)
Goodwill [Roll Forward]
Balance at September 30, 2024	$ 10,419
Goodwill acquired during the period	60
Purchase price allocation adjustments	(55)	[1]
Currency translation adjustments and other	(69)
Balance at March 29, 2025	10,355
Power & Control
Goodwill [Roll Forward]
Balance at September 30, 2024	5,020
Goodwill acquired during the period	60
Purchase price allocation adjustments	6	[1]
Currency translation adjustments and other	(21)
Balance at March 29, 2025	5,065
Airframe
Goodwill [Roll Forward]
Balance at September 30, 2024	5,306
Goodwill acquired during the period	0
Purchase price allocation adjustments	(61)	[1]
Currency translation adjustments and other	(39)
Balance at March 29, 2025	5,206
Non-aviation
Goodwill [Roll Forward]
Balance at September 30, 2024	93
Goodwill acquired during the period	0
Purchase price allocation adjustments	0	[1]
Currency translation adjustments and other	(9)
Balance at March 29, 2025	$ 84

[1] Primarily related to the opening balance sheet adjustments recorded from the acquisition of Raptor Scientific (Airframe) completed during the fourth quarter of fiscal 2024 and CPI's Electron Device Business (Power & Control) completed during the third quarter of fiscal 2024, within the allowable measurement period (not to exceed one year). Refer to Note 2, “Acquisitions,” for further information.

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DEBT - Schedule of Debt (Details) - USD ($) $ in Millions		Mar. 29, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Gross Amount		$ 24,568	$ 24,581
Debt Issuance Costs		(123)	(136)
Original Issue Discount		(45)	(51)
Short-term borrowings—trade receivable securitization facility		649	486
Long-term Debt		24,400	24,394
Finance lease obligations		277	262
Current portion of long-term debt		94	98
Long-term Debt, Gross and Lease Obligation		24,474	24,482
Deferred Finance Costs, Excluding Current Maturities		(123)	(135)
Debt Instrument, Unamortized Discount, Excluding Current Maturities		(45)	(51)
LONG-TERM DEBT		24,306	24,296
Term loans
Debt Instrument [Line Items]
Gross Amount		8,680	8,702
Debt Issuance Costs		(23)	(25)
Original Issue Discount		(31)	(35)
Long-term Debt	[1]	$ 8,626	$ 8,642
Senior Subordinated Notes | Senior Subordinated Notes $2650M Due 2027 5.50%
Debt Instrument [Line Items]
Interest rate		5.50%	5.50%
Gross Amount		$ 2,650	$ 2,650
Debt Issuance Costs		(8)	(9)
Original Issue Discount		0	0
Long-term Debt	[1]	$ 2,642	$ 2,641
Senior Subordinated Notes | Senior Subordinated Notes $1200M Due 2029 4.625%
Debt Instrument [Line Items]
Interest rate		4.625%	4.625%
Gross Amount		$ 1,200	$ 1,200
Debt Issuance Costs		(5)	(6)
Original Issue Discount		0	0
Long-term Debt	[1]	$ 1,195	$ 1,194
Senior Subordinated Notes | Senior Subordinated Notes $750M due 2029 4.875%
Debt Instrument [Line Items]
Interest rate		4.875%	4.875%
Gross Amount		$ 750	$ 750
Debt Issuance Costs		(4)	(4)
Original Issue Discount		0	0
Long-term Debt	[1]	$ 746	746
Secured Debt | Senior Secured Notes $2,100M due 2028 6.75%
Debt Instrument [Line Items]
Interest rate		6.75%
Gross Amount		$ 2,100	2,100
Debt Issuance Costs		(13)	(15)
Original Issue Discount		(7)	(8)
Long-term Debt	[1]	$ 2,080	2,077
Secured Debt | Senior Secured Notes $2,750M due 2029 6.375%
Debt Instrument [Line Items]
Interest rate		6.375%
Gross Amount		$ 2,750	2,750
Debt Issuance Costs		(20)	(22)
Original Issue Discount		(1)	(1)
Long-term Debt	[1]	$ 2,729	2,727
Secured Debt | Senior Secured Notes $1,450M due 2030 6.875%
Debt Instrument [Line Items]
Interest rate		6.875%
Gross Amount		$ 1,450	1,450
Debt Issuance Costs		(11)	(12)
Original Issue Discount		0	0
Long-term Debt		$ 1,439	1,438
Secured Debt | Senior Secured Notes $1,000M due 2031 7.125%
Debt Instrument [Line Items]
Interest rate		7.125%
Gross Amount		$ 1,000	1,000
Debt Issuance Costs		(8)	(9)
Original Issue Discount		(6)	(7)
Long-term Debt	[1]	$ 986	984
Secured Debt | Senior Secured Notes $2,200M due 2032 6.625%
Debt Instrument [Line Items]
Interest rate		6.625%
Gross Amount		$ 2,200	2,200
Debt Issuance Costs		(18)	(20)
Original Issue Discount		0	0
Long-term Debt	[1]	$ 2,182	2,180
Secured Debt | Senior Secured Notes $1,500M due 2033 6.00%
Debt Instrument [Line Items]
Interest rate		6.00%
Gross Amount		$ 1,500	1,500
Debt Issuance Costs		(13)	(14)
Original Issue Discount		0	0
Long-term Debt	[1]	1,487	1,486
Government refundable advances
Debt Instrument [Line Items]
Debt Issuance Costs		0	0
Original Issue Discount		0	0
Long-term Debt		11	17
Government refundable advances		11	17
Finance Lease Obligations
Debt Instrument [Line Items]
Debt Issuance Costs		0	0
Original Issue Discount		0	0
Long-term Debt		277	262
Finance lease obligations		277	262
Less: current portion
Debt Instrument [Line Items]
Debt Issuance Costs		0	(1)
Original Issue Discount		0	0
Long-term Debt, Current Maturities, Gross		94	99
Current portion of long-term debt		94	98
Asset-backed Securities
Debt Instrument [Line Items]
Debt Issuance Costs		(1)	(1)
Original Issue Discount		0	0
Short-term borrowings—trade receivable securitization facility		650	487
Short-term borrowings—trade receivable securitization facility	[1]	$ 649	$ 486

[1] The carrying amount of the debt instrument is presented net of debt issuance costs and original issue discount. Refer to Note 8, “Debt,” for gross carrying amounts.

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DEBT - Additional Debt Instruments (Details) - USD ($) $ in Millions	6 Months Ended
	Mar. 29, 2025	Sep. 30, 2024	Jul. 12, 2024	Jul. 11, 2024
Debt Instrument [Line Items]
Accrued interest	$ 312	$ 185
Finance lease obligations	$ 277	$ 262
Securitization Facility
Debt Instrument [Line Items]
Interest rate			1.45%	1.60%
Debt instrument, extension term	1 year
Line of Credit Facility, Maximum Borrowing Capacity			$ 650	$ 450
Proceeds from revolving credit facility	$ 163
Debt, Weighted Average Interest Rate	5.75%	6.73%
Government refundable advances
Debt Instrument [Line Items]
Government refundable advances	$ 11	$ 17
Finance Lease Obligations
Debt Instrument [Line Items]
Finance lease obligations	$ 277	$ 262

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INCOME TAXES - Narratives (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Effective income tax rate	23.00%	22.20%	21.70%	22.00%
Unrecognized tax benefit	$ 14		$ 14
Accrued potential payment of interest and penalties	4		4		$ 4
Decrease in unrecognized tax benefits is reasonably possible	$ 2		$ 2

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FAIR VALUE MEASUREMENTS - Carrying Amounts and Fair Values of Financial Instruments (Details) - USD ($) $ in Millions		Mar. 29, 2025	Sep. 30, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		$ 2,426	$ 6,261
Short-term borrowings—trade receivable securitization facility		649	486
Long-term Debt		24,400	24,394
Prepaid expenses and other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Rate Swap Assets	[1]	23	34
Interest Rate Cap Agreements	[1]	14	20
Foreign Currency Contract, Asset	[1]	0	3
Other non-current assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Rate Collar Assets	[2]	9	3
Accrued and other current liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	[3]	1	1
Interest Rate Cap Liabilities Carrying Amount	[3]	0	1
Foreign Currency Contract, Liability	[3]	2	0
Other non-current liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Rate Collar Agreement, Liability	[4]	0	8
Term loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	8,626	8,642
Government refundable advances
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt		11	17
Finance Lease Obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt		277	262
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Fair Value		2,426	6,261
Level 2 | Prepaid expenses and other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Rate Swap Assets	[1]	23	34
Interest Rate Cap Agreements	[1]	14	20
Foreign Currency Contract, Asset	[1]	0	3
Level 2 | Other non-current assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Rate Collar Assets	[2]	9	3
Level 2 | Accrued and other current liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	[3]	1	1
Interest Rate Cap Liabilities Carrying Amount	[3]	0	1
Foreign Currency Contract, Liability	[3]	2	0
Level 2 | Other non-current liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Rate Collar Agreement, Liability	[4]	0	8
Level 2 | Term loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	8,664	8,694
Level 2 | Government refundable advances
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		11	17
Level 2 | Finance Lease Obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		276	262
Senior Subordinated Notes $2650M Due 2027 5.50% | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	2,642	2,641
Senior Subordinated Notes $2650M Due 2027 5.50% | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	2,617	2,637
Senior Secured Notes $2,100M due 2028 6.75% | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	2,080	2,077
Senior Secured Notes $2,100M due 2028 6.75% | Level 1 | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	2,129	2,160
Senior Subordinated Notes $1200M Due 2029 4.625% | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	1,195	1,194
Senior Subordinated Notes $1200M Due 2029 4.625% | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	1,137	1,160
Senior Secured Notes $2,750M due 2029 6.375% | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	2,729	2,727
Senior Secured Notes $2,750M due 2029 6.375% | Level 1 | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	2,778	2,836
Senior Subordinated Notes $750M due 2029 4.875% | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	746	746
Senior Subordinated Notes $750M due 2029 4.875% | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	712	729
Senior Secured Notes $1,450M due 2030 | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	1,439	1,438
Senior Secured Notes $1,450M due 2030 | Level 1 | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	1,483	1,519
Senior Secured Notes $1,000M due 2031 7.125% | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	986	984
Senior Secured Notes $1,000M due 2031 7.125% | Level 1 | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	1,029	1,058
Senior Secured Notes $2,200M due 2032 6.625% | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	2,182	2,180
Senior Secured Notes $2,200M due 2032 6.625% | Level 1 | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	2,228	2,291
Senior Secured Notes $1,500M due 2033 6.00% | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	1,487	1,486
Senior Secured Notes $1,500M due 2033 6.00% | Level 1 | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	1,476	1,521
Asset-backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings—trade receivable securitization facility	[5]	649	486
Asset-backed Securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings - trade receivable securitization facility, Fair Value	[5]	$ 649	$ 486

[1] Included in prepaid expenses and other on the condensed consolidated balance sheets.

[2] Included in other non-current assets on the condensed consolidated balance sheets.

[3] Included in accrued and other current liabilities on the condensed consolidated balance sheets.

[4] Included in other non-current liabilities on the condensed consolidated balance sheets.

[5] The carrying amount of the debt instrument is presented net of debt issuance costs and original issue discount. Refer to Note 8, “Debt,” for gross carrying amounts.

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DERIVATIVES AND HEDGING ACTIVITIES - Summary of Outstanding Interest Rate Swap, Cap and Collar Agreements (Details) $ in Millions	Mar. 29, 2025 USD ($)
6.25% Interest rate swap, effective March 31, 2023 and maturing March 31, 2025
Derivative [Line Items]
Derivative, Notional Amount	$ 500
Derivative, Fixed Interest Rate	6.25%
Derivative, Variable Interest Rate	3.00%
Derivative, Basis Spread on Variable Rate	3.25%
6.35% Interest rate swap, effective March 31, 2023 and maturing March 31, 2025
Derivative [Line Items]
Derivative, Notional Amount	$ 1,500
Derivative, Fixed Interest Rate	6.35%
Derivative, Variable Interest Rate	3.10%
Derivative, Basis Spread on Variable Rate	3.25%
4.55% Interest rate swap, effective March 31, 2023 and maturing September 30, 2025
Derivative [Line Items]
Derivative, Notional Amount	$ 700
Derivative, Fixed Interest Rate	4.55%
Derivative, Variable Interest Rate	1.30%
Derivative, Basis Spread on Variable Rate	3.25%
1.25% Interest rate cap, effective March 31, 2023 and maturing September 30, 2025
Derivative [Line Items]
Derivative, Notional Amount	$ 700
Derivative, Cap Interest Rate	1.25%
2.00-3.50% Interest rate collar, effective March 31, 2025 and maturing September 30, 2026
Derivative [Line Items]
Derivative, Notional Amount	$ 1,100
Derivative, Floor Interest Rate	2.00%
Derivative, Cap Interest Rate	3.50%
2.00-3.50% Interest rate collar, effective September 30, 2025 and maturing September 30, 2026
Derivative [Line Items]
Derivative, Notional Amount	$ 500
Derivative, Floor Interest Rate	2.00%
Derivative, Cap Interest Rate	3.50%
2.50-4.50% Interest rate collar, effective September 30, 2025 and maturing September 30, 2027
Derivative [Line Items]
Derivative, Notional Amount	$ 1,338
Derivative, Floor Interest Rate	2.50%
Derivative, Cap Interest Rate	4.50%
2.50-4.50% Interest rate collar, effective September 30, 2026 and maturing September 30, 2027
Derivative [Line Items]
Derivative, Notional Amount	$ 1,550
Derivative, Floor Interest Rate	2.50%
Derivative, Cap Interest Rate	4.50%

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DERIVATIVES AND HEDGING ACTIVITIES - Summary of Balance Sheet Presentation of Derivative Assets and Liabilities (Details) - USD ($) $ in Millions		Mar. 29, 2025	Sep. 30, 2024
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	$ 46	$ 57
Derivative Liability, Fair Value, Gross Liability	[1]	1	10
Interest Rate Cap
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset		14	20
Derivative Liability, Fair Value, Gross Liability		0	1
Interest Rate Collar
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset		9	3
Derivative Liability, Fair Value, Gross Liability		0	8
Interest Rate Swap
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset		23	34
Derivative Liability, Fair Value, Gross Liability		$ 1	$ 1

[1] Refer to Note 10, “Fair Value Measurements,” for the condensed consolidated balance sheets classification of the Company's interest rate swap, cap and collar agreements.

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DERIVATIVES AND HEDGING ACTIVITIES - Narratives (Details) - USD ($) $ in Millions	6 Months Ended
	Mar. 29, 2025	Jun. 29, 2024	Jul. 01, 2023
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer	12 months
Interest rate collar beginning March 31, 2025 and Maturing September 30, 2026 | Minimum
Derivative [Line Items]
Derivative, Variable Interest Rate		2.50%	2.00%
Interest rate collar beginning March 31, 2025 and Maturing September 30, 2026 | Maximum
Derivative [Line Items]
Derivative, Variable Interest Rate		4.50%	3.50%
Interest Rate Swap and Cap Agreements
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	$ 12.0
Foreign Exchange Forward Exchange Contracts
Derivative [Line Items]
Derivative, Notional Amount	59.0
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Earnings, net of Tax, Next 12 months (Estimated)	$ 2.0

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SEGMENTS - Narratives (Details)	6 Months Ended
	Mar. 29, 2025 Segment
Segment Reporting [Abstract]
Number of reporting segments	3

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SEGMENTS - Schedule of Net Sales by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Segment Reporting Information [Line Items]
NET SALES	$ 2,150	$ 1,919	$ 4,156	$ 3,708
Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES	1,108	920	2,134	1,810
Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES	1,002	959	1,949	1,821
Operating Segments | Non-aviation
Segment Reporting Information [Line Items]
NET SALES	40	40	73	77
Commercial and non-aerospace OEM | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES	238	203	433	382
Commercial and non-aerospace OEM | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES	305	331	583	625
Commercial and non-aerospace aftermarket | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES	337	295	678	595
Commercial and non-aerospace aftermarket | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES	356	313	690	615
Defense | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES	533	422	1,023	833
Defense | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES	$ 341	$ 315	$ 676	$ 581

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SEGMENTS - Reconciliation of EBITDA Defined by Segment to Consolidated Income from Continuing Operations Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	$ 1,162	$ 1,021	$ 2,224	$ 1,933
Interest expense-net	378	326	756	626
Non-cash stock and deferred compensation expense			73	111
Refinancing costs	0	28	0	28
Income from continuing operations before income taxes	622	519	1,241	1,008
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	1,181	1,049	2,295	2,005
Operating Segments | Power & Control
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	636	523	1,222	1,035
Operating Segments | Airframe
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	529	510	1,045	940
Operating Segments | Non-aviation
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	16	16	28	30
Corporate, Non-Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	19	28	71	72
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization expense	89	74	179	143
Interest expense-net	378	326	756	626
Acquisition transaction and integration-related expenses	9	14	22	16
Non-cash stock and deferred compensation expense	48	60	73	111
Refinancing costs	0	28	0	28
Other, net	$ 16	$ 0	$ (47)	$ 1

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SEGMENTS - Schedule of Total Assets by Segment (Details) - USD ($) $ in Millions	Mar. 29, 2025	Sep. 30, 2024
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 21,905	$ 25,586
Operating Segments | Power & Control
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	9,462	9,180
Operating Segments | Airframe
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	10,092	10,045
Operating Segments | Non-aviation
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	190	193
Corporate, Non-Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 2,161	$ 6,168

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ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Accumulated Other Comprehensive Loss, Net of Taxes (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Mar. 29, 2025	Dec. 28, 2024	Mar. 30, 2024	Dec. 30, 2023	Mar. 29, 2025	Mar. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period		$ (6,251)	$ (6,283)	$ (3,506)	$ (1,978)	$ (6,283)	$ (1,978)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax				2	(53)
Other Comprehensive Income (Loss), Net of Tax		76		(58)		(129)	(20)
Balance at end of period		(5,664)	(6,251)	(3,022)	(3,506)	(5,664)	(3,022)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax		(8)		1		(1)	(17)
Cash Flow Hedging | Designated as Hedging Instrument | Net Sales
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Derivative, Gain (Loss) on Derivative, Net						(1)	(2)
Derivative, Gain (Loss) on Derivative, Tax Expense (Benefit)						(1)	(1)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Expense, Net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Derivative, Gain (Loss) on Derivative, Net						18	55
Derivative, Gain (Loss) on Derivative, Tax Expense (Benefit)						6	17
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period		(247)	(42)	(60)	(98)	(42)	(98)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(24)	22	2	(53)
Pension and postretirement benefit plans adjustment, net of tax		0	0	0	0
Foreign currency translation adjustment		100	(227)	(60)	91
Other Comprehensive Income (Loss), Net of Tax	[1]					(129)	(20)
Balance at end of period		(171)	(247)	(118)	(60)	(171)	(118)
Unrealized gains (losses) on derivatives (1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	[2]		19		143	19	143
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	[1],[2]					(2)	(51)
Balance at end of period	[2]	17		92		17	92
Pension and post-retirement benefit plans adjustment (2)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	[3]		1		2	1	2
Pension and postretirement benefit plans adjustment, net of tax	[1],[3]					0	0
Balance at end of period	[3]	1		2		1	2
Foreign currency translation adjustment (3)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	[4]		$ (62)		$ (243)	(62)	(243)
Foreign currency translation adjustment	[1],[4]					(127)	31
Balance at end of period	[4]	$ (189)		$ (212)		$ (189)	$ (212)

[1] Presented net of reclassifications out of AOCL into earnings, specifically net sales and interest expense-net, for realized (losses) gains on derivatives designated and qualifying as cash flow hedges of $(1) million (net of taxes of less than $(1) million) and $18 million (net of taxes of $6 million), respectively, for the twenty-six week period ended March 29, 2025 and $(2) million (net of taxes of $(1) million) and $55 million (net of taxes of $17 million), respectively, for the twenty-six week period ended March 30, 2024

[2] Represents unrealized gains (losses) on derivatives designated and qualifying as cash flow hedges, net of tax (expense) benefit, of $8 million and $(1) million for the thirteen week periods ended March 29, 2025 and March 30, 2024, respectively, and $1 million and $17 million for the twenty-six week periods ended March 29, 2025 and March 30, 2024, respectively

[3] There were no material pension liability adjustments, net of taxes, related to activity on the defined pension plan and postretirement benefit plan for the thirteen and twenty-six week periods ended March 29, 2025 and March 30, 2024.

[4] Represents gains (losses) resulting from foreign currency translation of financial statements, including gains (losses) from certain intercompany transactions, into U.S. dollars at the rates of exchange in effect at the balance sheet dates.

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LEASES - Components of Lease Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Lessee, Lease, Description [Line Items]
Lease, Cost	$ 14	$ 12	$ 28	$ 23
Cost of sales or selling and administrative expenses
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	6	5	12	10
Cost of sales
Lessee, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset, Amortization	3	3	7	6
Interest expense-net
Lessee, Lease, Description [Line Items]
Finance Lease, Interest Expense	$ 5	$ 4	$ 9	$ 7

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LEASES - Supplemental Cash Flow Information Related To Leases (Details) - USD ($) $ in Millions	6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024
Leases [Abstract]
Operating Lease, Payments	$ 11	$ 10
Finance Lease, Interest Payment on Liability	8	6
Finance Lease, Principal Payments	4	3
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	2	2
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 17	$ 65

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LEASES - Supplemental Balance Sheet Information Related to Leases, Including the Remaining Lease Term and Weighted Average Discount Rates (Details) - USD ($) $ in Millions	Mar. 29, 2025	Sep. 30, 2024
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 52	$ 61
Operating Lease, Liability, Current	17	19
Operating Lease, Liability, Noncurrent	37	43
Operating Lease, Liability	54	62
Finance Lease, Right-of-Use Asset	255	252
Finance Lease, Liability, Current	7	6
Finance Lease, Liability, Noncurrent	270	256
Finance Lease, Liability	$ 277	$ 262
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	OTHER NON-CURRENT ASSETS	OTHER NON-CURRENT ASSETS
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued and other current liabilities	Accrued and other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	OTHER NON-CURRENT LIABILITIES	OTHER NON-CURRENT LIABILITIES
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	PROPERTY, PLANT AND EQUIPMENT—NET	PROPERTY, PLANT AND EQUIPMENT—NET
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current portion of long-term debt	Current portion of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	LONG-TERM DEBT	LONG-TERM DEBT

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LEASES - Weighted-Average Term and Discount Rate Remaining (Details)	Mar. 29, 2025
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	5 years 4 months 24 days
Finance Lease, Weighted Average Remaining Lease Term	20 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	6.10%
Finance Lease, Weighted Average Discount Rate, Percent	7.00%

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LEASES - Maturities Schedule of Operating and Financing Leases (Details) - USD ($) $ in Millions	Mar. 29, 2025	Sep. 30, 2024
Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 19
Finance Leases, Future Minimum Payments Due, Next Twelve Months	20
Lessee, Operating Lease, Liability, to be Paid, Year One	14
Finance Lease, Liability, to be Paid, Year One	24
Operating Leases, Future Minimum Payments, Due in Two Years	10
Finance Leases, Future Minimum Payments Due in Two Years	24
Operating Leases, Future Minimum Payments, Due in Three Years	6
Finance Leases, Future Minimum Payments Due in Three Years	24
Operating Leases, Future Minimum Payments, Due in Four Years	4
Finance Leases, Future Minimum Payments Due in Four Years	25
Operating Leases, Future Minimum Payments, Due Thereafter	11
Finance Leases, Future Minimum Payments Due Thereafter	445
Operating Leases, Future Minimum Payments Due	64
Finance Leases, Future Minimum Payments Due	562
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	10
Finance Leases, Future Minimum Payments, Interest Included in Payments	285
Operating Lease, Liability	54	$ 62
Finance lease obligations	$ 277	$ 262