Summary of Significant Accounting Policies (Policies)	3 Months Ended
May 31, 2023
Accounting Policies [Abstract]
Organization and Basis of Presentation	Organization Aircastle Limited (“Aircastle,” the “Company,” “we,” “us” or “our”) is a Bermuda exempted company that was incorporated on October 29, 2004 under the provisions of Section 14 of the Companies Act of 1981 of Bermuda. Aircastle’s business consists of acquiring, leasing, managing and selling commercial jet aircraft. The Company is controlled by affiliates of Marubeni Corporation (“Marubeni”) and Mizuho Leasing Company, Limited (“Mizuho Leasing” and, together with Marubeni, our “Shareholders”). Aircastle is a holding company and conducts its business through subsidiaries that are wholly-owned, either directly or indirectly, by Aircastle.
Principles of Consolidation	Basis of Presentation and Principles of Consolidation The consolidated financial statements presented are prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). The accompanying consolidated financial statements are unaudited and have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim financial reporting and, in our opinion, reflect all adjustments, including normal recurring items, which are necessary to present fairly the results for interim periods. Operating results for the periods presented are not necessarily indicative of the results that may be expected for the entire year. Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. GAAP have been omitted in accordance with the rules and regulations of the SEC. However, we believe that the disclosures are adequate to make the information presented not misleading. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended February 28, 2023. The consolidated financial statements include the accounts of Aircastle and all its subsidiaries, including any Variable Interest Entity (“VIE”) of which Aircastle is the primary beneficiary. All intercompany transactions and balances have been eliminated in consolidation. We manage and analyze our business and report on our results of operations based on one operating segment: leasing, financing, selling and managing commercial flight equipment. Our Chief Executive Officer is the chief operating decision maker. The Company’s management has reviewed and evaluated all events or transactions for potential recognition and/or disclosure subsequent to the balance sheet date of May 31, 2023, through the date on which the consolidated financial statements included in this Form 10-Q were issued.
Concentration Risk, Credit Risk, Policy	Risk and Uncertainties In the normal course of business, Aircastle encounters several significant types of economic risk including credit, market, aviation industry and capital market risks. Credit risk is the risk of a lessee’s inability or unwillingness to make contractually required payments and to fulfill its other contractual obligations to Aircastle. Market risk reflects the change in the value of financings due to changes in interest rate spreads or other market factors, including the value of collateral underlying financings. Aviation industry risk is the risk of a downturn in the commercial aviation industry which could adversely impact a lessee’s ability to make payments, increase the risk of early lease terminations and depress lease rates and the value of the Company’s aircraft. Capital market risk is the risk that the Company is unable to obtain capital at reasonable rates to fund the growth of its business or to refinance existing debt facilities.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. While Aircastle believes the estimates and related assumptions used in the preparation of the consolidated financial statements are appropriate, actual results could differ from those estimates.
New Accounting Pronouncements, Policy	Recent Accounting Pronouncements In March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2020-04, Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASC 848”). ASC 848 provides temporary optional expedients and exceptions to certain U.S. GAAP contract modification requirements for contracts affected by reference rate reform as entities transition away from the London Interbank Offered Rate (“LIBOR”) to alternative reference rates. In December 2022, the FASB issued ASU 2022-06 to defer the sunset date of ASC 848 from December 31, 2022 to December 31, 2024, after which entities will no longer be permitted to apply the optional expedients in ASC 848. Effective March 1, 2023, we adopted ASC 848, which has not and is not expected to have a material impact on our consolidated financial statements. We have one aircraft lease and certain debt financings for which the associated lease rental revenue and interest expense are based on LIBOR. The ICE Benchmark Administration Limited, LIBOR’s administrator, has ceased publishing certain LIBOR settings and is expected to stop publishing the Overnight, 1-month, 3-month, 6-month, and 12-month USD LIBOR U.S. dollar settings in 2023. In anticipation of that cessation, we commenced the transition of our LIBOR-based contracts to the Secured Overnight Financing Rate (“SOFR” or “Term SOFR”). The optional expedients under ASC 848 have allowed and will allow us to account for contract modifications as continuations of the existing contracts without further reassessments or remeasurements that would otherwise be required under the applicable U.S. GAAP. For the three months ended May 31, 2023, less than 1% of each our lease rental revenue and interest expense was derived from a floating-rate lease or debt financings that used LIBOR as the applicable reference rate.

Summary of Significant Accounting Policies (Policies)

3 Months Ended

May 31, 2023

Organization

Aircastle Limited (“Aircastle,” the “Company,” “we,” “us” or “our”) is a Bermuda exempted company that was incorporated on October 29, 2004 under the provisions of Section 14 of the Companies Act of 1981 of Bermuda. Aircastle’s business consists of acquiring, leasing, managing and selling commercial jet aircraft.

The Company is controlled by affiliates of Marubeni Corporation (“Marubeni”) and Mizuho Leasing Company, Limited (“Mizuho Leasing” and, together with Marubeni, our “Shareholders”).

Aircastle is a holding company and conducts its business through subsidiaries that are wholly-owned, either directly or indirectly, by Aircastle.

Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The consolidated financial statements presented are prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”).

The accompanying consolidated financial statements are unaudited and have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim financial reporting and, in our opinion, reflect all adjustments, including normal recurring items, which are necessary to present fairly the results for interim periods. Operating results for the periods presented are not necessarily indicative of the results that may be expected for the entire year. Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. GAAP have been omitted in accordance with the rules and regulations of the SEC. However, we believe that the disclosures are adequate to make the information presented not misleading. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended February 28, 2023.

The consolidated financial statements include the accounts of Aircastle and all its subsidiaries, including any Variable Interest Entity (“VIE”) of which Aircastle is the primary beneficiary. All intercompany transactions and balances have been eliminated in consolidation.

We manage and analyze our business and report on our results of operations based on one operating segment: leasing, financing, selling and managing commercial flight equipment. Our Chief Executive Officer is the chief operating decision maker.

The Company’s management has reviewed and evaluated all events or transactions for potential recognition and/or disclosure subsequent to the balance sheet date of May 31, 2023, through the date on which the consolidated financial statements included in this Form 10-Q were issued.

Concentration Risk, Credit Risk, Policy

Risk and Uncertainties

In the normal course of business, Aircastle encounters several significant types of economic risk including credit, market, aviation industry and capital market risks. Credit risk is the risk of a lessee’s inability or unwillingness to make contractually required payments and to fulfill its other contractual obligations to Aircastle. Market risk reflects the change in the value of financings due to changes in interest rate spreads or other market factors, including the value of collateral underlying financings. Aviation industry risk is the risk of a downturn in the commercial aviation industry which could adversely impact a lessee’s ability to make payments, increase the risk of early lease terminations and depress lease rates and the value of the Company’s aircraft. Capital market risk is the risk that the Company is unable to obtain capital at reasonable rates to fund the growth of its business or to refinance existing debt facilities.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. While Aircastle believes the estimates and related assumptions used in the preparation of the consolidated financial statements are appropriate, actual results could differ from those estimates.

New Accounting Pronouncements, Policy

Recent Accounting Pronouncements

In March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2020-04, Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASC 848”). ASC 848 provides temporary optional expedients and exceptions to certain U.S. GAAP contract modification requirements for contracts affected by reference rate reform as entities transition away from the London Interbank Offered Rate (“LIBOR”) to alternative reference rates. In December 2022, the FASB issued ASU 2022-06 to defer the sunset date of ASC 848 from December 31, 2022 to December 31, 2024, after which entities will no longer be permitted to apply the optional expedients in ASC 848.

Effective March 1, 2023, we adopted ASC 848, which has not and is not expected to have a material impact on our consolidated financial statements. We have one aircraft lease and certain debt financings for which the associated lease rental revenue and interest expense are based on LIBOR. The ICE Benchmark Administration Limited, LIBOR’s administrator, has ceased publishing certain LIBOR settings and is expected to stop publishing the Overnight, 1-month, 3-month, 6-month, and 12-month USD LIBOR U.S. dollar settings in 2023. In anticipation of that cessation, we commenced the transition of our LIBOR-based contracts to the Secured Overnight Financing Rate (“SOFR” or “Term SOFR”). The optional expedients under ASC 848 have allowed and will allow us to account for contract modifications as continuations of the existing contracts without further reassessments or remeasurements that would otherwise be required under the applicable U.S. GAAP.

For the three months ended May 31, 2023, less than 1% of each our lease rental revenue and interest expense was derived from a floating-rate lease or debt financings that used LIBOR as the applicable reference rate.