Supplemental Agreement No. 34, dated as of March 19, 2025, to Purchase Agreement No. 03735 dated as of February 1, 2013, by and between American Airlines, Inc. and The Boeing Company

This SUPPLEMENTAL AGREEMENT No. 34 (SA-34) To PURCHASE AGREEMENT NO. 03735, entered into as of March 19 , 2025 (Effective Date), by and between THE BOEING COMPANY, a Delaware corporation with offices in Seattle, Washington (Boeing) and AMERICAN AIRLINES, INC. a Delaware corporation with offices in Fort Worth, Texas, together with its successors and permitted assigns (Customer);

WHEREAS, Boeing and Customer entered into Purchase Agreement No. 03735 dated February 1, 2013 relating to Boeing Model 737 MAX Aircraft, as amended and supplemented (Purchase Agreement) and capitalized terms used herein without definitions shall have the meanings specified therefore in such Purchase Agreement;

    WHEREAS, Boeing and Customer agree to [****] ([****]) [****].

WHEREAS, Boeing and Customer agree to [****] ([****]) [****].

WHEREAS, Boeing and Customer agree to [****] update the letter agreement pertaining to [****].

    NOW, THEREFORE, in consideration of the mutual covenants herein contained, the parties agree that the Purchase Agreement is amended and supplemented as set forth below and otherwise agree as follows:

1.Table of Contents.

The “Table Of Contents” to the Purchase Agreement referencing SA-33 in the footer is deleted in its entirety and is replaced with the new “Table Of Contents” (attached hereto) referencing SA-34 in the footer to reflect changes made to the Purchase Agreement by this SA-34. Such new Table of Contents is hereby incorporated into the Purchase Agreement in replacement of its predecessor.

2.Letter Agreements.

2.1Letter Agreement No. AAL-PA-03735-LA-1106651R14 is hereby deleted in its entirety and replaced with Letter Agreement No. AAL-PA-03735-LA-1106651R15, including attachments thereto, (attached hereto) entitled “[****]”, (Revised [****] Letter Agreement) referencing SA-34 in the footer. The Revised [****] Letter Agreement, including attachments thereto, is hereby incorporated into the Purchase Agreement.

2.2Letter Agreement No. AAL-PA-03735-LA ###-###-#### is hereby deleted in its entirety and replaced with Letter Agreement No. AAL-PA-03735-LA-2306983R1 (attached hereto) entitled “[****]”, (Revised [****] Letter Agreement) referencing SA-34 in the footer. The Revised [****] Letter Agreement is hereby incorporated into the Purchase Agreement.

3.Advance Payments.

3.1    Upon execution of this SA-34, [****] ([****]) of [****] by Customer for the [****] ([****]) [****] referenced herein will be [****] ([****]) [****] referenced herein.

4.Miscellaneous.

4.1The Purchase Agreement is amended and supplemented as set forth above by the revised Table Of Contents, Revised [****] Letter Agreement, and Revised [****] Letter Agreement. All other terms and conditions of the Purchase Agreement remain unchanged and are in full force and effect.

4.2References in the Purchase Agreement and any supplemental agreements and associated letter agreements to the letter agreement listed in the left column of the below table shall be deemed to refer to the corresponding revised versions of the supplemental exhibits and letter agreement listed in the right column of the below table.

4.3If Boeing or Customer determines that references described in Section 4.2 of this SA-34 should be further amended or other references in the Purchase Agreement and any supplemental agreements and associated letter agreements need to be amended as a result of this SA-34, then Boeing and Customer will work together for a mutually agreeable solution.

Subject:    [****]

Reference:    Purchase Agreement No. 03735 (Purchase Agreement) between The Boeing Company (Boeing) and American Airlines, Inc. (Customer) relating to Model 737 MAX aircraft (Aircraft)

This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement. All terms used but not defined in this Letter Agreement shall have the same meaning as in the Purchase Agreement.

1.Right to Purchase [****].

Subject to the terms and conditions contained in this Letter Agreement, in addition to the Aircraft described in [****] to the Purchase Agreement as of the date of execution of this Letter Agreement, [****] ([****] and [****] ([****]). As of the Effective Date (as defined in Supplemental Agreement No. 34 to the Purchase Agreement (SA-34)) of SA-34 to the Purchase Agreement, there are [****].

2.[****].

2.1Intentionally Omitted.

2.2Intentionally Omitted.

2.3[****]. The [****] with [****] ([****]) in [****] ([****]) [****] for each [****] are listed in Attachment B to this Letter Agreement. No later than [****] to the [****] in each calendar [****] for years [****], Boeing will provide written notice setting forth [****] with [****] in such calendar [****] ([****]). However, [****], the [****] for such [****] will be [****]. Such notice will constitute an amendment to Attachment B to this Letter Agreement.

3.Configuration.

3.1Subject to the provisions of Section 3.2 below, [****] the Detail Specification for the Aircraft [****] at the time of [****] (as defined in Section 8 below). Such Detail Specification will be revised to include:

(i)[****],

(ii)[****], and

(iii) [****].

3.2[****] the right to [****] the [****] starting from a [****]; [****] which would result pursuant to the provisions of Section 3.1 above.

4.Price.

4.1The [****] for each of the [****] to this Letter Agreement.

4.2The [****] for each of the [****] shall be [****] ([****]) [****].

4.3The [****] shall be developed in accordance with the terms of the Purchase Agreement and determined at the time of [****].

5.Payment.

5.1[****].

5.2[****].

5.3[****].

6.Reserved.

7.[****].

7.1Customer may [****] to Boeing [****] ([****]):

7.1.1Intentionally Omitted.

7.1.2[****].

7.2Reserved.

8.[****].

8.1[****].

8.2Reserved.

8.2.1Reserved.

8.2.2    Reserved.

8.3     Reserved.

    8.3.1    Reserved.

9.Assignment.

Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Aircraft and cannot be assigned in whole or, in part, without the prior written consent of Boeing.

10.Confidential Treatment.

The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. This Letter Agreement shall be subject to the terms and conditions of Letter Agreement No. AAL-PA-03735-LA-1106670R1 entitled “Confidentiality”.

Subject:    [****]

Reference:    Purchase Agreement No. 03735 (Purchase Agreement) between The Boeing Company (Boeing) and American Airlines, Inc. (Customer) relating to model 737 MAX aircraft (Aircraft)

This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement. All terms used but not defined in this Letter Agreement will have the same meaning as in the Purchase Agreement.

1.[****].

[****] ([****]) [****] ([****]) and [****] ([****]) [****] ([****]) as set forth in Attachment A to this Letter Agreement ([****]). In [****] ([****]) [****] of the Purchase Agreement ([****]), the following [****]:

2.[****].

2.1[****].

2.1.1Boeing [****] ([****]) [****] ([****]) in the [****] ([****]) for [****] ([****]). The [****].

2.1.2If [****] (i) [****], (ii) [****], or (iii) [****] (each a [****]), then [****] either by (i) [****] or (ii) [****] under the Purchase Agreement.

2.2[****].

2.2.1Boeing [****] ([****] and collectively ,with the [****], the [****]) in [****] ([****]) for [****] ([****]).

2.2.2A [****] pursuant to Article 2.2.1 above and [****].

2.2.3If Customer [****] set forth in Attachment A of this Letter Agreement ([****]), then Boeing [****].

2.2.4If Boeing and Customer [****] ([****]), a [****].

2.2.5If [****] in accordance with the Purchase Agreement [****] pursuant to (i) [****] ([****]), (ii) [****], or (iii) [****] ([****]), Boeing will [****]. For the avoidance of doubt, [****].

2.3For additional clarity, the [****] is [****] to (and [****]) [****] pursuant to [****] of Letter Agreement AAL-PA-03735-LA-1106671R2 entitled “Miscellaneous Commitments for Boeing Model 737 MAX Aircraft” (the Misc. Commitments LA).

2.4Reserved.

2.5Reserved.

2.6If [****] (as defined below), then for [****] (the [****]). Customer [****] (i) [****] or (ii) by [****] under the Purchase Agreement. For the purposes of this Section 2.6, a “[****]” is where there [****]t (i) pursuant to [****] (as amended from time to time, specifically by the [****]), (ii) pursuant to [****], or (iii) pursuant to [****] of Letter Agreement AAL-PA-03735-LA ###-###-#### entitled “[****]”.

3.Confidentiality.

The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. This Letter Agreement shall be subject to the terms and conditions of Letter Agreement No. AAL-PA-03735-LA-1106670R1 entitled “Confidentiality”.

4.Assignment.

Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer becoming the operator of the Aircraft and cannot be assigned, in whole or in part, without the prior written consent of Boeing.