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Debt
12 Months Ended
Dec. 31, 2019
Debt Instrument [Line Items]  
Debt Debt
Long-term debt included on our consolidated balance sheets consisted of (in millions):
 
December 31,
 
2019
 
2018
Secured
 
 
 
2013 Credit Facilities, variable interest rate of 3.54%, installments through 2025 (a)
$
1,807

 
$
1,825

2014 Credit Facilities, variable interest rate of 3.72%, installments through 2021 (a)
1,202

 
1,215

April 2016 Credit Facilities, variable interest rate of 3.80%, installments through 2023 (a)
970

 
980

December 2016 Credit Facilities, variable interest rate of 3.74%, installments through 2023 (a)
1,213

 
1,225

Enhanced equipment trust certificates (EETCs), fixed interest rates ranging from 3.00% to 8.39%, averaging 4.05%, maturing from 2020 to 2032 (b)
11,933

 
11,648

Equipment loans and other notes payable, fixed and variable interest rates ranging from 2.99% to 7.31%, averaging 3.45%, maturing from 2020 to 2031 (c)
4,727

 
5,060

Special facility revenue bonds, fixed interest rates ranging from 5.00% to 8.00%, maturing from 2020 to 2031
754

 
798

 
22,606

 
22,751

Unsecured
 
 
 
4.625% senior notes, interest only payments until due in March 2020 (d)
500

 
500

5.000% senior notes, interest only payments until due in June 2022 (d)
750

 

5.50% senior notes

 
750

 
1,250

 
1,250

Total long-term debt
23,856

 
24,001

Less: Total unamortized debt discount, premium and issuance costs
211

 
222

Less: Current maturities
2,749

 
3,213

Long-term debt, net of current maturities
$
20,896

 
$
20,566


The table below shows the maximum availability under revolving credit facilities, all of which were undrawn, as of December 31, 2019 (in millions):
2013 Revolving Facility
$
750

2014 Revolving Facility
1,643

April 2016 Revolving Facility
450

Other Short-term Revolving Facility
400

Total
$
3,243


Secured financings are collateralized by assets, primarily aircraft, engines, simulators, aircraft spare parts, airport gate leasehold rights, route authorities, airport slots and certain pre-delivery payments.
At December 31, 2019, the maturities of long-term debt are as follows (in millions):
2020
$
2,798

2021
3,510

2022
2,303

2023
4,074

2024
1,523

2025 and thereafter
9,648

Total
$
23,856


(a) 2013, 2014, April 2016 and December 2016 Credit Facilities
2013 Credit Facilities
In November 2019, American and AAG entered into the Sixth Amendment to Amended and Restated Credit and Guaranty Agreement, amending the Amended and Restated Credit and Guaranty Agreement dated as of May 21, 2015 (as previously amended, the 2013 Credit Agreement; the revolving credit facility established thereunder, the 2013 Revolving Facility; the term loan facility established thereunder, the 2013 Term Loan Facility; and the 2013 Revolving Facility together with the 2013 Term Loan Facility, the 2013 Credit Facilities), which reduced the total aggregate commitments under the 2013 Revolving Facility to $750 million from $1.0 billion. In addition, certain lenders party to the 2013 Credit Agreement extended the maturity date of their commitments under the 2013 Revolving Facility to October 2024 from October 2023.
2014 Credit Facilities
In November 2019, American and AAG entered into the Seventh Amendment to Amended and Restated Credit and Guaranty Agreement, amending the Amended and Restated Credit and Guaranty Agreement dated as of April 20, 2015 (as previously amended, the 2014 Credit Agreement; the revolving credit facility established thereunder, the 2014 Revolving Facility; the term loan facility established thereunder, the 2014 Term Loan Facility; and the 2014 Revolving Facility together with the 2014 Term Loan Facility, the 2014 Credit Facilities), which increased the total aggregate commitments under the 2014 Revolving Facility to $1.6 billion from $1.5 billion. In addition, certain lenders party to the 2014 Credit Agreement extended the maturity date of their commitments under the 2014 Revolving Facility to October 2024 from October 2023.
April 2016 Credit Facilities
In November 2019, American and AAG entered into the Fifth Amendment to Credit and Guaranty Agreement, amending the Credit and Guaranty Agreement dated as of April 29, 2016 (as previously amended, April 2016 Credit Agreement; the revolving credit facility established thereunder, the April 2016 Revolving Facility; the term loan facility established thereunder, the 2016 Term Loan Facility; and the April 2016 Revolving Facility together with the 2016 Term Loan Facility, the April 2016 Credit Facilities), which increased the total aggregate commitments under the April 2016 Revolving Facility to $450 million from $300 million. In addition, certain lenders party to the April 2016 Credit Agreement extended the maturity date of their commitments under the April 2016 Revolving Facility to October 2024 from October 2023.
December 2016 Credit Facilities
In December 2016, American and AAG entered into the Amended and Restated Credit and Guaranty Agreement, dated as of December 15, 2016 (as amended, the December 2016 Credit Agreement; the term loan facility established thereunder, the December 2016 Term Loan Facility; and together with the revolving credit facility that may be established thereunder in the future, the December 2016 Credit Facilities).
Certain details of our 2013 Credit Facilities, 2014 Credit Facilities, April 2016 Credit Facilities and December 2016 Credit Facilities (collectively referred to as the Credit Facilities) are shown in the table below as of December 31, 2019:
 
2013 Credit Facilities
 
2014 Credit Facilities
 
April 2016 Credit Facilities
 
December 2016 Credit Facilities
 
2013 Replacement Term Loan
 
2013 
Revolving Facility
 
2014 Term Loan
 
2014 
Revolving
Facility
 
April 2016 Term Loan
 
April 2016 
Revolving
Facility
 
December 2016 Term Loan
Aggregate principal issued
   or credit facility availability
   (in millions)
$1,919
 
$750
 
$1,250
 
$1,643
 
$1,000
 
$450
 
$1,250
Principal outstanding or
   drawn (in millions)
$1,807
 
$—
 
$1,202
 
$—
 
$970
 
$—
 
$1,213
Maturity date
June 2025
 
October 2024
 
October 2021
 
October 2024
 
April 2023
 
October 2024
 
December 2023
LIBOR margin
1.75%
 
2.00%
 
2.00%
 
2.00%
 
2.00%
 
2.00%
 
2.00%

The term loans under each of the Credit Facilities are repayable in annual installments in an amount equal to 1.00% of the aggregate principal amount issued, with any unpaid balance due on the respective maturity dates. Voluntary prepayments may be made by American at any time.
The 2013 Revolving Facility, 2014 Revolving Facility and April 2016 Revolving Facility provide that American may from time to time borrow, repay and reborrow loans thereunder. The 2013 Revolving Facility and 2014 Revolving Facility have the ability to issue letters of credit thereunder in an aggregate amount outstanding at any time up to $100 million and $200 million, respectively. The 2013 Revolving Facility, 2014 Revolving Facility and April 2016 Revolving Facility are each subject to an undrawn annual fee of 0.63%. As of December 31, 2019, there were no borrowings or letters of credit outstanding under the 2013 Revolving Facility, 2014 Revolving Facility or April 2016 Revolving Facility. The December 2016 Credit Facilities provide for a revolving credit facility that may be established thereunder in the future.
Subject to certain limitations and exceptions, the Credit Facilities are secured by collateral, including certain spare parts, slots, route authorities, simulators and leasehold rights. American has the ability to make future modifications to the collateral pledged, subject to certain restrictions. American’s obligations under the Credit Facilities are guaranteed by AAG. American is required to maintain a certain minimum ratio of appraised value of the collateral to the outstanding loans as further described below in “Collateral-Related Covenants.”
The Credit Facilities contain events of default customary for similar financings, including cross default to other material indebtedness. Upon the occurrence of an event of default, the outstanding obligations may be accelerated and become due and payable immediately. In addition, if a “change of control” occurs, American will (absent an amendment or waiver) be required to repay at par the loans outstanding under the Credit Facilities and terminate the 2013 Revolving Facility, 2014 Revolving Facility and April 2016 Revolving Facility and any revolving credit facility established under the December 2016 Credit Facilities. The Credit Facilities also include covenants that, among other things, require AAG to maintain a minimum aggregate liquidity (as defined in the Credit Facilities) of not less than $2.0 billion and limit the ability of AAG and its restricted subsidiaries to pay dividends and make certain other payments, make certain investments, incur additional indebtedness, incur liens on the collateral, dispose of the collateral, enter into certain affiliate transactions and engage in certain business activities, in each case subject to certain exceptions.
In December 2019, due to uncertainty surrounding the timing of the Boeing 737 MAX aircraft return to service, American entered into an additional short-term revolving line of credit to provide us with incremental borrowing capacity of up to $400 million. We have no present intention to borrow any amounts under this facility, which matures in September 2020 with an optional extension to December 2020.
(b) EETCs
2019-1 Aircraft EETCs
In August 2019, American created three pass-through trusts which issued approximately $1.1 billion aggregate face amount of Series 2019-1 Class AA, Class A and Class B EETCs (the 2019-1 Aircraft EETCs) in connection with the financing of 35 aircraft previously delivered or to be delivered to American through September 2020 (the 2019-1 Aircraft). As of December 31, 2019, approximately $804 million of the proceeds had been used to purchase equipment notes issued by American in connection with financing 28 aircraft under the 2019-1 Aircraft EETCs, of which $608 million was used to repay existing indebtedness. Interest and principal payments on equipment notes issued in connection with the 2019-1 Aircraft EETCs are payable semi-annually in February and August of each year, with interest payments scheduled to begin in February 2020 and with principal payments scheduled to begin (i) in the case of equipment notes with respect to any 2019-1 Aircraft owned by American at the time of issuance of the 2019-1 Aircraft EETCs, in February 2020 and (ii) in the case of equipment notes with respect to the Embraer E175 aircraft and the Airbus A321neo aircraft scheduled to be delivered after the issuance of the 2019-1 Aircraft EETCs, in August 2020 and August 2021, respectively. The remaining proceeds of approximately $293 million as of December 31, 2019 were being held in escrow with a depositary for the benefit of the holders of the 2019-1 Aircraft EETCs until such time as American issues additional equipment notes with respect to the remaining 2019-1 Aircraft to the pass-through trusts, which will purchase such additional equipment notes with the escrowed funds. These escrowed funds are not guaranteed by American and are not reported as debt on its condensed consolidated balance sheet because the proceeds held by the depositary for the benefit of the holders of the 2019-1 Aircraft EETCs are not American’s assets.
Certain information regarding the 2019-1 Aircraft EETC equipment notes and remaining escrowed proceeds, as of December 31, 2019, is set forth in the table below.
 
2019-1 Aircraft EETCs
 
Series AA
 
Series A
 
Series B
Aggregate principal issued
$579 million
 
$289 million
 
$229 million
Remaining escrowed proceeds
$155 million
 
$77 million
 
$61 million
Fixed interest rate per annum
3.15%
 
3.50%
 
3.85%
Maturity date
February 2032
 
February 2032
 
February 2028

2019-1 Engine EETCs
In June 2019, American created pass-through trusts which issued $650 million in aggregate face amount of 2019-1 Engine EETCs (the 2019-1 Engine EETCs), with maturities from June 2022 to June 2026. All of the proceeds received by such pass-through trusts from the sale of the 2019-1 Engine EETCs have been used to acquire equipment notes issued by American to the pass-through trusts. The pass-through trust certificates represent the right to payment under the equipment notes that are full-recourse obligations of American and such equipment notes are secured by spare aircraft engines currently owned and operated by American.
(c) Equipment Loans and Other Notes Payable Issued in 2019
In 2019, American entered into agreements under which it borrowed $1.7 billion in connection with the financing or refinancing, as the case may be, of certain aircraft and other flight equipment, of which $643 million was used to repay existing indebtedness. Debt incurred under these agreements matures in 2023 through 2031 and bears interest at variable rates (comprised of LIBOR plus an applicable margin) averaging 3.37% at December 31, 2019.
(d) Senior Notes
In May 2019, AAG issued $750 million aggregate principal amount of 5.000% senior notes due 2022 (the 5.000% senior notes). These notes bear interest at a rate of 5.000% per annum, payable semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2019. The 5.000% senior notes mature on June 1, 2022.
The details of our 4.625% and 5.000% senior notes are shown in the table below as of December 31, 2019:
 
4.625% Senior Notes
 
5.000% Senior Notes
Aggregate principal issued and outstanding
$500 million
 
$750 million
Maturity date
March 2020
 
June 2022
Fixed interest rate per annum
4.625%
 
5.000%
Interest payments
Semi-annually in arrears in March and September
 
Semi-annually in arrears in June and December

The 4.625% and 5.000% senior notes are senior unsecured obligations of AAG. These senior notes are fully and unconditionally guaranteed by American. The indentures for these senior notes contain covenants and events of default generally customary for similar financings. In addition, if we experience specific kinds of changes of control, we must offer to repurchase these senior notes in whole or in part at a price of 101% of the principal amount plus accrued and unpaid interest, if any, to (but not including) the repurchase date. Upon the occurrence of certain events of default, these senior notes may be accelerated and become due and payable.
Guarantees
As of December 31, 2019, AAG had issued guarantees covering approximately $725 million of American’s special facility revenue bonds (and interest thereon) and $8.1 billion of American’s secured debt (and interest thereon), including the Credit Facilities and certain EETC financings.
Collateral-Related Covenants
Certain of our debt financing agreements (including our term loans, revolving credit facilities and spare engine EETCs) contain loan to value (LTV) ratio covenants and require us to appraise the related collateral annually. Pursuant to such agreements, if the LTV ratio exceeds a specified threshold or if the value of the appraised collateral fails to meet a specified threshold, as the case may be, we are required, as applicable, to pledge additional qualifying collateral (which in some cases may include cash or investment securities), or pay down such financing, in whole or in part.
Specifically, we are required to meet certain collateral coverage tests on an annual basis for our Credit Facilities, as described below:
 
2013 Credit Facilities
 
2014 Credit Facilities
 
April 2016
Credit Facilities
 
December 2016
Credit Facilities
Frequency of Appraisals of
   Appraised Collateral
Annual
 
Annual
 
Annual
 
Annual
LTV Requirement
1.6x Collateral valuation to amount of debt outstanding (62.5% LTV)
 
1.6x Collateral valuation to amount of debt outstanding (62.5% LTV)
 
1.6x Collateral valuation to amount of debt outstanding (62.5% LTV)
 
1.6x Collateral valuation to amount of debt outstanding (62.5% LTV)
LTV as of Last Measurement
   Date
36.2%
 
17.7%
 
36.2%
 
53.6%
Collateral Description
Generally, certain slots, route authorities and airport gate leasehold rights used by American to operate all services between the U.S. and South America
 
Generally, certain slots, route authorities and airport gate leasehold rights used by American to operate certain services between the U.S. and European Union (including London Heathrow)
 
Generally, certain spare parts
 
Generally, certain Ronald Reagan Washington National Airport (DCA) slots, certain La Guardia Airport (LGA) slots, certain simulators and certain leasehold rights

At December 31, 2019, we were in compliance with the applicable collateral coverage tests as of the most recent measurement dates.
American Airlines, Inc. [Member]  
Debt Instrument [Line Items]  
Debt Debt
Long-term debt included on American’s consolidated balance sheets consisted of (in millions):
 
December 31,
 
2019
 
2018
Secured
 
 
 
2013 Credit Facilities, variable interest rate of 3.54%, installments through 2025 (a)
$
1,807

 
$
1,825

2014 Credit Facilities, variable interest rate of 3.72%, installments through 2021 (a)
1,202

 
1,215

April 2016 Credit Facilities, variable interest rate of 3.80%, installments through 2023 (a)
970

 
980

December 2016 Credit Facilities, variable interest rate of 3.74%, installments through 2023 (a)
1,213

 
1,225

Enhanced equipment trust certificates (EETCs), fixed interest rates ranging from 3.00% to 8.39%, averaging 4.05%, maturing from 2020 to 2032 (b)
11,933

 
11,648

Equipment loans and other notes payable, fixed and variable interest rates ranging from 2.99% to 7.31%, averaging 3.45%, maturing from 2020 to 2031 (c)
4,727

 
5,060

Special facility revenue bonds, fixed interest rates of 5.00%, maturing from 2020 to 2031
725

 
769

Total long-term debt
22,577

 
22,722

Less: Total unamortized debt discount, premium and issuance costs
205

 
219

Less: Current maturities
2,246

 
2,466

Long-term debt, net of current maturities
$
20,126

 
$
20,037


The table below shows the maximum availability under revolving credit facilities, all of which were undrawn, as of December 31, 2019 (in millions):
2013 Revolving Facility
$
750

2014 Revolving Facility
1,643

April 2016 Revolving Facility
450

Other Short-term Revolving Facility
400

Total
$
3,243


Secured financings are collateralized by assets, primarily aircraft, engines, simulators, aircraft spare parts, airport gate leasehold rights, route authorities, airport slots and certain pre-delivery payments.
At December 31, 2019, the maturities of long-term debt are as follows (in millions):
2020
$
2,293

2021
3,508

2022
1,551

2023
4,072

2024
1,521

2025 and thereafter
9,632

Total
$
22,577


(a) 2013, 2014, April 2016 and December 2016 Credit Facilities
2013 Credit Facilities
In November 2019, American and AAG entered into the Sixth Amendment to Amended and Restated Credit and Guaranty Agreement, amending the Amended and Restated Credit and Guaranty Agreement dated as of May 21, 2015 (as previously amended, the 2013 Credit Agreement; the revolving credit facility established thereunder, the 2013 Revolving Facility; the term loan facility established thereunder, the 2013 Term Loan Facility; and the 2013 Revolving Facility together with the 2013 Term Loan Facility, the 2013 Credit Facilities), which reduced the total aggregate commitments under the 2013 Revolving Facility to $750 million from $1.0 billion. In addition, certain lenders party to the 2013 Credit Agreement extended the maturity date of their commitments under the 2013 Revolving Facility to October 2024 from October 2023.
2014 Credit Facilities
In November 2019, American and AAG entered into the Seventh Amendment to Amended and Restated Credit and Guaranty Agreement, amending the Amended and Restated Credit and Guaranty Agreement dated as of April 20, 2015 (as previously amended, the 2014 Credit Agreement; the revolving credit facility established thereunder, the 2014 Revolving Facility; the term loan facility established thereunder, the 2014 Term Loan Facility; and the 2014 Revolving Facility together with the 2014 Term Loan Facility, the 2014 Credit Facilities), which increased the total aggregate commitments under the 2014 Revolving Facility to $1.6 billion from $1.5 billion. In addition, certain lenders party to the 2014 Credit Agreement extended the maturity date of their commitments under the 2014 Revolving Facility to October 2024 from October 2023.
April 2016 Credit Facilities
In November 2019, American and AAG entered into the Fifth Amendment to Credit and Guaranty Agreement, amending the Credit and Guaranty Agreement dated as of April 29, 2016 (as previously amended, April 2016 Credit Agreement; the revolving credit facility established thereunder, the April 2016 Revolving Facility; the term loan facility established thereunder, the 2016 Term Loan Facility; and the April 2016 Revolving Facility together with the 2016 Term Loan Facility, the April 2016 Credit Facilities), which increased the total aggregate commitments under the April 2016 Revolving Facility to $450 million from $300 million. In addition, certain lenders party to the April 2016 Credit Agreement extended the maturity date of their commitments under the April 2016 Revolving Facility to October 2024 from October 2023.
December 2016 Credit Facilities
In December 2016, American and AAG entered into the Amended and Restated Credit and Guaranty Agreement, dated as of December 15, 2016 (as amended, the December 2016 Credit Agreement; the term loan facility established thereunder, the December 2016 Term Loan Facility; and together with the revolving credit facility that may be established thereunder in the future, the December 2016 Credit Facilities).
Certain details of American’s 2013 Credit Facilities, 2014 Credit Facilities, April 2016 Credit Facilities and December 2016 Credit Facilities (collectively referred to as the Credit Facilities) are shown in the table below as of December 31, 2019:
 
2013 Credit Facilities
 
2014 Credit Facilities
 
April 2016 Credit Facilities
 
December 2016 Credit Facilities
 
2013 Replacement Term Loan
 
2013 
Revolving Facility
 
2014 Term
Loan
 
2014 
Revolving Facility
 
April 2016
Term Loan
 
April 2016
Revolving Facility
 
December 2016 Term Loan
Aggregate principal issued
   or credit facility availability
   (in millions)
$1,919
 
$750
 
$1,250
 
$1,643
 
$1,000
 
$450
 
$1,250
Principal outstanding or
   drawn (in millions)
$1,807
 
$—
 
$1,202
 
$—
 
$970
 
$—
 
$1,213
Maturity date
June 2025
 
October 2024
 
October 2021
 
October 2024
 
April 2023
 
October 2024
 
December 2023
LIBOR margin
1.75%
 
2.00%
 
2.00%
 
2.00%
 
2.00%
 
2.00%
 
2.00%

The term loans under each of the Credit Facilities are repayable in annual installments in an amount equal to 1.00% of the aggregate principal amount issued, with any unpaid balance due on the respective maturity dates. Voluntary prepayments may be made by American at any time.
The 2013 Revolving Facility, 2014 Revolving Facility and April 2016 Revolving Facility provide that American may from time to time borrow, repay and reborrow loans thereunder. The 2013 Revolving Facility and 2014 Revolving Facility have the ability to issue letters of credit thereunder in an aggregate amount outstanding at any time up to $100 million and $200 million, respectively. The 2013 Revolving Facility, 2014 Revolving Facility and April 2016 Revolving Facility are each subject to an undrawn annual fee of 0.63%. As of December 31, 2019, there were no borrowings or letters of credit outstanding under the 2013 Revolving Facility, 2014 Revolving Facility or April 2016 Revolving Facility. The December 2016 Credit Facilities provide for a revolving credit facility that may be established thereunder in the future.
Subject to certain limitations and exceptions, the Credit Facilities are secured by collateral, including certain spare parts, slots, route authorities, simulators and leasehold rights. American has the ability to make future modifications to the collateral pledged, subject to certain restrictions. American’s obligations under the Credit Facilities are guaranteed by AAG. American is required to maintain a certain minimum ratio of appraised value of the collateral to the outstanding loans as further described below in “Collateral-Related Covenants.”
The Credit Facilities contain events of default customary for similar financings, including cross default to other material indebtedness. Upon the occurrence of an event of default, the outstanding obligations may be accelerated and become due and payable immediately. In addition, if a “change of control” occurs, American will (absent an amendment or waiver) be required to repay at par the loans outstanding under the Credit Facilities and terminate the 2013 Revolving Facility, 2014 Revolving Facility and April 2016 Revolving Facility and any revolving credit facility established under the December 2016 Credit Facilities. The Credit Facilities also include covenants that, among other things, require AAG to maintain a minimum aggregate liquidity (as defined in the Credit Facilities) of not less than $2.0 billion and limit the ability of AAG and its restricted subsidiaries to pay dividends and make certain other payments, make certain investments, incur additional indebtedness, incur liens on the collateral, dispose of the collateral, enter into certain affiliate transactions and engage in certain business activities, in each case subject to certain exceptions.
In December 2019, due to uncertainty surrounding the timing of the Boeing 737 MAX aircraft return to service, American entered into an additional short-term revolving line of credit to provide us with incremental borrowing capacity of up to $400 million. We have no present intention to borrow any amounts under this facility, which matures in September 2020 with an optional extension to December 2020.
(b) EETCs
2019-1 Aircraft EETCs
In August 2019, American created three pass-through trusts which issued approximately $1.1 billion aggregate face amount of Series 2019-1 Class AA, Class A and Class B EETCs (the 2019-1 Aircraft EETCs) in connection with the financing of 35 aircraft previously delivered or to be delivered to American through September 2020 (the 2019-1 Aircraft). As of December 31, 2019, approximately $804 million of the proceeds had been used to purchase equipment notes issued by American in connection with financing 28 aircraft under the 2019-1 Aircraft EETCs, of which $608 million was used to repay existing indebtedness. Interest and principal payments on equipment notes issued in connection with the 2019-1 Aircraft EETCs are payable semi-annually in February and August of each year, with interest payments scheduled to begin in February 2020 and with principal payments scheduled to begin (i) in the case of equipment notes with respect to any 2019-1 Aircraft owned by American at the time of issuance of the 2019-1 Aircraft EETCs, in February 2020 and (ii) in the case of equipment notes with respect to the Embraer E175 aircraft and the Airbus A321neo aircraft scheduled to be delivered after the issuance of the 2019-1 Aircraft EETCs, in August 2020 and August 2021, respectively. The remaining proceeds of approximately $293 million as of December 31, 2019 were being held in escrow with a depositary for the benefit of the holders of the 2019-1 Aircraft EETCs until such time as American issues additional equipment notes with respect to the remaining 2019-1 Aircraft to the pass-through trusts, which will purchase such additional equipment notes with the escrowed funds. These escrowed funds are not guaranteed by American and are not reported as debt on its condensed consolidated balance sheet because the proceeds held by the depositary for the benefit of the holders of the 2019-1 Aircraft EETCs are not American’s assets.
Certain information regarding the 2019-1 Aircraft EETC equipment notes and remaining escrowed proceeds, as of December 31, 2019, is set forth in the table below.
 
2019-1 Aircraft EETCs
 
Series AA
 
Series A
 
Series B
Aggregate principal issued
$579 million
 
$289 million
 
$229 million
Remaining escrowed proceeds
$155 million
 
$77 million
 
$61 million
Fixed interest rate per annum
3.15%
 
3.50%
 
3.85%
Maturity date
February 2032
 
February 2032
 
February 2028

2019-1 Engine EETCs
In June 2019, American created pass-through trusts which issued $650 million in aggregate face amount of 2019-1 Engine EETCs (the 2019-1 Engine EETCs), with maturities from June 2022 to June 2026. All of the proceeds received by such pass-through trusts from the sale of the 2019-1 Engine EETCs have been used to acquire equipment notes issued by American to the pass-through trusts. The pass-through trust certificates represent the right to payment under the equipment notes that are full-recourse obligations of American and such equipment notes are secured by spare aircraft engines currently owned and operated by American.
(c) Equipment Loans and Other Notes Payable Issued in 2019
In 2019, American entered into agreements under which it borrowed $1.7 billion in connection with the financing or refinancing, as the case may be, of certain aircraft and other flight equipment, of which $643 million was used to repay existing indebtedness. Debt incurred under these agreements matures in 2023 through 2031 and bears interest at variable rates (comprised of LIBOR plus an applicable margin) averaging 3.37% at December 31, 2019.
Guarantees
As of December 31, 2019, American had issued guarantees covering AAG’s $500 million aggregate principal amount of 4.625% senior notes due March 2020 and $750 million aggregate principal amount of 5.000% senior notes due June 2022.
Collateral-Related Covenants
Certain of American’s debt financing agreements (including its term loans, revolving credit facilities and spare engine EETCs) contain loan to value (LTV) ratio covenants and require American to appraise the related collateral annually. Pursuant to such agreements, if the LTV ratio exceeds a specified threshold or if the value of the appraised collateral fails to meet a specified threshold, as the case may be, American is required, as applicable, to pledge additional qualifying collateral (which in some cases may include cash or investment securities), or pay down such financing, in whole or in part.

Specifically, American is required to meet certain collateral coverage tests on an annual basis for its Credit Facilities, as described below:
 
2013 Credit Facilities
 
2014 Credit Facilities
 
April 2016 Credit
Facilities
 
December 2016
Credit Facilities
Frequency of Appraisals of
   Appraised Collateral
Annual
 
Annual
 
Annual
 
Annual
LTV Requirement
1.6x Collateral valuation to amount of debt outstanding (62.5% LTV)
 
1.6x Collateral valuation to amount of debt outstanding (62.5% LTV)
 
1.6x Collateral valuation to amount of debt outstanding (62.5% LTV)
 
1.6x Collateral valuation to amount of debt outstanding (62.5% LTV)
LTV as of Last Measurement
   Date
36.2%
 
17.7%
 
36.2%
 
53.6%
Collateral Description
Generally, certain slots, route authorities and airport gate leasehold rights used by American to operate all services between the U.S. and South America
 
Generally, certain slots, route authorities and airport gate leasehold rights used by American to operate certain services between the U.S. and European Union (including London Heathrow)
 
Generally, certain spare parts
 
Generally, certain Ronald Reagan Washington National Airport (DCA) slots, certain La Guardia Airport (LGA) slots, certain simulators and certain leasehold rights
At December 31, 2019, American was in compliance with the applicable collateral coverage tests as of the most recent measurement dates.