Please wait
    Exhibit 10.3(b)
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207



INFORMATION IN THIS EXHIBIT IDENTIFIED BY [***] IS CONFIDENTIAL AND HAS BEEN EXCLUDED PURSUANT TO ITEM 601(B)(10)(iv) OF REGULATION S-K BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL.

DAL-PA-05602-LA-2506956


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    Open Configuration Matters

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    Aircraft Configuration.
1.1    Initial Configuration. The initial configuration of the Aircraft is defined by Boeing Model 787-10 [***]. Due to the long period of time between Purchase Agreement signing and delivery of the first Aircraft, the final configuration of the Aircraft will be completed as described below.
1.2    Final Configuration. The Aircraft configuration will be completed using the then-current Boeing basic model aircraft configuration document applicable to the Aircraft at the time of Final Configuration (defined as follows). Boeing and Customer will incorporate certain other configuration changes into the Aircraft as such changes are offered by Boeing and accepted by authorized representative of Customer in writing (Final Configuration) in accordance with the following schedule:
1.2.1    No later than [***] prior to the scheduled delivery month for the first Aircraft, Boeing will provide to Customer a list of offerable seats, In-Flight Entertainment equipment and associated configuration milestone deadlines associated with those.
1.2.2    No later than [***] prior to the first Aircraft's scheduled delivery month, Boeing and Customer will meet to discuss potential optional features.
1.2.3    Within [***], Boeing will provide Customer with a proposal for [***].
1.2.4    Customer will then have [***] to accept or reject [***].
    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg

2.    Effect on Purchase Agreement.
2.1    Following Final Configuration, Boeing will provide a written amendment to the Purchase Agreement (Amendment). Customer will execute the Amendment within thirty (30) calendar days addressing the items below:
2.1.1    Changes to the basic model aircraft which are applicable to the Aircraft and have been developed by Boeing between the date of signing of the Purchase Agreement and date of Final Configuration;
2.1.2    [***] accepted by Customer pursuant to Article 1.2 above (Customer Configuration Changes);
2.1.3    Update the Aircraft configuration definition contained in Exhibit A of the Purchase Agreement and referenced in Table 1 of the Purchase Agreement; and
2.1.4    Update the prices contained in Table 1 of the Purchase Agreement to adjust for the difference, if any, between [***]
2.2    Following the Amendment, the Final Configuration will be incorporated into the Detail Specification.
2.3    Revisions to the [***] may be included in the Amendment when such Customer Configuration Changes have a significant effect on [***]
2.4    If the Amendment to the Purchase Agreement does not occur as set out in Article 2.1 above, then Boeing may rely on [***]
3.    Confidential Treatment.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.
Open Configuration Matters
DAL-PA-05602-LA-2506956    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


Open Configuration Matters
DAL-PA-05602-LA-2506956    Page 3
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506957


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    a) Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 aircraft (Aircraft)

b) Customer Services General Terms Agreement No. 32-1 (CSGTA) between Boeing and Customer.

This letter agreement (Letter Agreement) is entered into on the date below and amends and supplements the CSGTA. All terms used but not defined in this Letter Agreement have the same meaning as in the CSGTA, except for Aircraft which will have the meaning as defined in the Purchase Agreement.

[***]
1.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]
8.    [***]
9.    Order of Precedence.
In the event of any inconsistency between the terms of this Letter Agreement and the terms of any other provisions of the CSGTA, the terms of this Letter Agreement will control.



DAL-PA-05602-LA-2506957
[***]    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
10.    Assignment.
Unless otherwise noted herein, the credit memoranda, payment schedules and other business considerations described in this Letter Agreement are provided to Customer and in consideration of Customer becoming the operator of the Aircraft. This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing except as expressly permitted under Articles 10.1.1 and 10.1.3 of the Purchase Agreement.
11.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each Party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other Party. Notwithstanding the foregoing, either Party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing Party makes commercially reasonable efforts to notify the non-disclosing Party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing Party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such Party.


ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


DAL-PA-05602-LA-2506957
[***]    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506958


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    a) Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787 aircraft (Aircraft)

b) Customer Services General Terms Agreement No. 32-1 (
CSGTA) as amended and supplemented between Boeing and Customer

This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement. All terms used but not defined in this Letter Agreement have the same meaning as in the Purchase Agreement.
1.    [***]
2.    [***]
3.    Additional Terms and Conditions.
[***]

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207




DAL-PA-05602-LA-2506959


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    Special Matters relating to COTS Software and End User License Agreements

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787 aircraft (Aircraft)

This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement. All terms used but not defined in this Letter Agreement have the same meaning as in the Purchase Agreement.
Recitals
Certain [***] software are available to perform various functions required in the Aircraft (COTS Software).
The industry practice for COTS Software is to permit manufacturers to install the software in products for sale to customers. The manufacturer is required to pass to the customer an End User License Agreement (EULA), which covers the right to use the COTS Software. The EULAs also require each user of the product to further license the software and pass the EULA to any user to whom they transfer the product.
Because of the industry practice for COTS Software, Boeing does not acquire title to COTS Software and cannot pass title to COTS Software at the time of delivery of the Aircraft.
Therefore, the parties desire to amend certain provisions of the Purchase Agreement to properly reflect the rights and obligations of the parties with respect to the COTS Software included in the Aircraft.
Agreement
[***]
    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


DAL-PA-05602-LA-2506959    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506960


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354


Subject:    [***]

Reference:    a) Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787 aircraft (Aircraft)

b) Letter Agreement entitled “[***]”

c) Customer Services General Terms Agreement No. 32-1 (CSGTA) between Boeing and Customer, including Supplemental Agreement for Electronic Access (SA-EA), Supplemental Agreement for e-Enabling (SA-eE), and 787 Software License Orders

This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement. All terms used but not defined in this Letter Agreement have the same meaning as in the Purchase Agreement.
1.    Introduction.
Prior to delivery of the Aircraft to Customer, Boeing baseline production software will be installed in the Aircraft. [***]
2.    Boeing-Provided Operational Software and Data.
Pursuant to the Purchase Agreement and any applicable 787 software license order(s), [***]
3.    Customer-Provided Operational Software and Data.
3.1    Airline Modifiable Software. [***]
3.2    [***]
3.3    [***]
4.    Additional Terms and Conditions.
4.1    [***]

    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
4.2    [***] the Boeing performed loading services is estimated to be approximately [***] per attempt. [***]
4.2.1    [***]
4.2.2    [***]
4.3    [***]
4.4    Customer is responsible for functional testing, verification, quality assurance, and operational approval of all Customer-provided operational software.
4.5    [***]
4.6    [***]
4.7    [***]

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


DAL-PA-05602-LA-2506960              Page 2
[***]
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506962


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***] Guarantees

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787 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.
Boeing agrees to provide Customer with the [***] guarantees in the Attachment to this Letter Agreement. These guarantees [***].
1.    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. except as expressly permitted under Articles 10.1.1 and 10.1.3 of the Purchase Agreement.
2.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.
    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


DAL-PA-05602-LA-2506962    Page 2
BOEING PROPRIETARY

Attachment to Letter Agreement
No. DAL-PA-05602-LA-2506962
GEnx-1B74/75 Engines
Page 1
[***]

P.A. No. 5602
AERO-B-BBA4-M25-0075B    SS25-0338
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506963


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354


Subject:    [***]

Reference:    Purchase Agreement No. 05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]
8.    [***]
9.    [***]
10.    [***]
11.    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.
12.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each Party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase
DAL-PA-05602-LA-2506963     Page 1
[***]    
BOEING PROPRIETARY

boeing_logoa.jpg
Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other Party. Notwithstanding the foregoing, either Party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing Party makes commercially reasonable efforts to notify the non-disclosing Party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing Party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such Party.

ACCEPTED AND AGREED TO this







Date:
January 12, 2026







DELTA AIR LINES, INC.

THE BOEING COMPANY




By:
/s/ Kristen Bojko

By:
/s/ Mira Zimmermann




Name:
Kristen Bojko

Name:
Mira Zimmermann




Title:
Vice President – Fleet

Title:
Attorney-In-Fact



DAL-PA-05602-LA-2506963     Page 2
[***]    
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506964


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. 5602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]
8.    Assignment.
Unless otherwise noted herein, the credit memoranda, payment schedules and other business considerations described in this Letter Agreement are provided to Customer and in consideration of Customer becoming the operator of the Aircraft. This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing except as expressly permitted under Articles 10.1.1 and 10.1.3 of the Purchase Agreement.
9.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person
    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.
If the foregoing correctly sets forth your understanding of our agreement with respect to the matters contained herein, please indicate your acceptance and approval below.

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


DAL-PA-05602-LA-2506964
[***]    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506965


Delta Air Lines, Inc.
Department [***]
1030 Delta Blvd.
Atlanta, Georgia 30354


Subject:    [***]

Reference:    Purchase Agreement No. 05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]
8.    [***]
9.    [***]
10.    Assignment.
Unless otherwise noted herein, the credit memoranda, payment schedules and other business considerations described in this Letter Agreement are provided in consideration of Customer becoming the operator of the Aircraft. This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing except as expressly permitted under Articles 10.1.1 and 10.1.3 of the Purchase Agreement.

11.    Confidentiality.
    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
The information contained in this Purchase Agreement represents confidential business information and has value precisely because it is not available generally or to other parties. Each Party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Purchase Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.
If the foregoing correctly sets forth your understanding of our agreement with respect to the matters contained herein, please indicate your acceptance and approval below.

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact

DAL-PA-05602-LA-2506965
[***]    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg
ATTACHMENT A

[***]

DAL-PA-05602-LA-2506965
[***]    Page 3
BOEING PROPRIETARY

boeing_logoa.jpg
ATTACHMENT B

[***]
DAL-PA-05602-LA-2506965
[***]    Page 4
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506966


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. 05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]
8.    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.

9.    Confidentiality.
The information contained in this Purchase Agreement represents confidential business information and has value precisely because it is not available generally or to other parties. Each Party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Purchase Agreement (i) for
DAL-PA-05602-LA-2506966
[***]    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.
If the foregoing correctly sets forth your understanding of our agreement with respect to the matters contained herein, please indicate your acceptance and approval below.

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


DAL-PA-05602-LA-2506966
[***]    Page 2
BOEING PROPRIETARY

    The Boeing Company
    P.O. Box 3707
    Seattle, WA 98124 2207

DAL-PA-05602- LA-2506967


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    Option Aircraft [***]

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    Right to Purchase Option Aircraft.
Subject to the terms and conditions contained in this Letter Agreement, in addition to the Aircraft described in Table 1 to the Purchase Agreement as of the date of execution of this Letter Agreement, Customer will have the option to purchase additional Model 787-10 aircraft as option aircraft (Option Aircraft).
2.    Delivery.
The number of aircraft and delivery months for the Option Aircraft are listed in the Attachment A (Attachment A) to this Letter Agreement.
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]
8.    [***]
9.    [***]
10.    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
    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
assigned, in whole or in part, without the prior written consent of Boeing, except as provided in Sections 10.1.1 and 10.1.3 of the Purchase Agreement.
11.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each Party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other Party. Notwithstanding the foregoing, either Party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing Party makes commercially reasonable efforts to notify the non-disclosing Party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing Party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such Party.


ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact



DAL-PA-05602-LA-2506967
Option Aircraft [***]                                     Page 2
BOEING PROPRIETARY


Attachment A To
Letter Agreement No. DAL-PA-05602-LA-2506967
Option Aircraft [***]
GE Engines
Airframe Model/MTOW:
787-10
[***]
Configuration Specification:
[***]
Engine Model/Thrust:
GENX-1B74/75
[***]
Airframe Price Base Year/Escalation Formula:
[***]
Airframe Price:
[***]
Engine Price Base Year/Escalation Formula:
[***]
Optional Features Estimate:
[***]
Sub-Total of Airframe and Features:
[***]
Airframe Escalation Data:
Engine Price (Per Aircraft):
[***]
Aircraft Basic Price (Excluding BFE/SPE):
[***]
Buyer Furnished Equipment (BFE) Estimate:
[***]
In-Flight Entertainment (IFE) Estimate:
[***]
[***]

Escalation
Escalation
Escalation Estimate
[***]
Delivery
Number of
Factor
Factor
Adv Payment Base
[***]
[***]
[***]
[***]
Date
Aircraft
(Airframe)
(Engine)
Price Per A/P
[***]
[***]
[***]
[***]
[***]
[***]
[***]
[***]
[***]
Total:    [***]

DAL-PA-05602-LA-2506967 125559-1O.txt
Page 1
Boeing Proprietary


Attachment B To
Letter Agreement No. DAL-PA-05602-LA-2506967
[***]
GE Engines
Airframe Model/MTOW:
787-10
[***]
Configuration Specification:
[***]
Engine Model/Thrust:
GENX-1B74/75
[***]
Airframe Price Base Year/Escalation Formula:
[***]
Airframe Price:
[***]
Engine Price Base Year/Escalation Formula:
[***]
Optional Features Estimate:
[***]
Sub-Total of Airframe and Features:
[***]
Airframe Escalation Data:
Engine Price (Per Aircraft):
[***]
Aircraft Basic Price (Excluding BFE/SPE):
[***]
Buyer Furnished Equipment (BFE) Estimate:
[***]
In-Flight Entertainment (IFE) Estimate:
[***]
[***]

Escalation
Escalation
Escalation Estimate
[***]
Delivery
Number of
Factor
Factor
Adv Payment Base
[***]
[***]
[***]
[***]
Date
Aircraft
(Airframe)
(Engine)
Price Per A/P
[***]
[***]
[***]
[***]
[***]
[***]
[***]
[***]
[***]
Total:    [***]

DAL-PA-05602-LA-2506967 125559-1O.txtPage 2
Boeing Proprietary

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506968


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]

8.    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 except as expressly permitted by Section 10.1.1 or 10.1.3 of the Purchase Agreement.

9.    Confidentiality.

The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each party will limit the disclosure of its contents to its employees with a need to know the
DAL-PA-05602-LA-2506968
[***]    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.


ACCEPTED AND AGREED TO this







Date:
January 12, 2026







DELTA AIR LINES, INC.

THE BOEING COMPANY




By:
/s/ Kristen Bojko

By:
/s/ Mira Zimmermann




Name:
Kristen Bojko

Name:
Mira Zimmermann




Title:
Vice President – Fleet

Title:
Attorney-In-Fact

DAL-PA-05602-LA-2506968
[***]    Page 2
BOEING PROPRIETARY

    The Boeing Company
    P.O. Box 3707
    Seattle, WA 98124 2207

DAL-PA-05602-LA-2506969


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. 05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 aircraft (Aircraft)

This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement. [***] All terms used but not defined in this Letter Agreement have the same meaning as in the Purchase Agreement.
1.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    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 except as provided in Articles 10.1.1 and 10.1.3 of the Purchase Agreement.
6.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each Party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other Party. Notwithstanding the foregoing, either Party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing Party makes commercially reasonable efforts to notify the non-disclosing Party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing Party; (ii) for the purpose of disclosure to its auditors and its legal
    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such Party.

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


DAL-PA-05602-LA-2506969
[***]    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506970


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    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 except as provided in Articles 10.1.1 and 10.1.3 of the Purchase Agreement.
7.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of
    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.


ACCEPTED AND AGREED TO this







Date:
January 12, 2026







DELTA AIR LINES, INC.

THE BOEING COMPANY




By:
/s/ Kristen Bojko

By:
/s/ Mira Zimmermann




Name:
Kristen Bojko

Name:
Mira Zimmermann




Title:
Vice President – Fleet

Title:
Attorney-In-Fact


DAL-PA-05602-LA-2506970
[***]    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg

DAL-PA-05602-LA-2506971


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    Assignment.
Unless otherwise noted herein, the credit memoranda, payment schedules and other business considerations described in this Letter Agreement are provided as a financial accommodation to Customer and in consideration of Customer taking title to the Aircraft at time of delivery and becoming the operator of the Aircraft. This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing except as expressly permitted under Articles 10.1.1 and 10.1.3 of the Purchase Agreement.
6.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such
DAL-PA-05602-LA- 2506971
[***]    Page 1

boeing_logoa.jpg
disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.


ACCEPTED AND AGREED TO this







Date:
January 12, 2026







DELTA AIR LINES, INC.

THE BOEING COMPANY




By:
/s/ Kristen Bojko

By:
/s/ Mira Zimmermann




Name:
Kristen Bojko

Name:
 Mira Zimmermann




Title:
Vice President – Fleet

Title:
Attorney-In-Fact





DAL-PA-05602-LA-2506971
[***]    Page 2


Attachment A - Table 1 To
Letter Agreement DAL-PA-05602-LA-2506971 [***]
Aircraft [***]
GE Engines
Airframe Model/MTOW:
787-10
[***]
Configuration Specification:
[***]
Engine Model/Thrust:
GENX-1B74/75
[***]
Airframe Price Base Year/Escalation Formula:
[***]
Airframe Price:
[***]
Engine Price Base Year/Escalation Formula:
[***]
Optional Features Estimate:
[***]
Sub-Total of Airframe and Features:
[***]
Airframe Escalation Data:
Engine Price (Per Aircraft):
[***]
Aircraft Basic Price (Excluding BFE/SPE):
[***]
Buyer Furnished Equipment (BFE) Estimate:
[***]
In-Flight Entertainment (IFE) Estimate:
[***]
Deposit per Aircraft:
[***]


Escalation
Escalation
Escalation Estimate
[***]
Delivery
Number of
Factor
Factor
Adv Payment Base
[***]
[***]
[***]
[***]
Date
Aircraft
(Airframe)
(Engine)
Price Per A/P
[***]
[***]
[***]
[***]
[***]
[***]
[***]
[***]
[***]
Total:    [***]

DAL-PA-05602-LA-2506971 125313-1F.txtPage 1
Boeing Proprietary

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506972


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. 05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]
8.    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 except as provided in Articles 10.1.1 and 10.1.3 of the Purchase Agreement.
9.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of
    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.


ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


DAL-PA-05602-LA-2506972
[***]    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg
ATTACHMENT A

[***]



DAL-PA-05602-LA-2506972
[***]    Page 3
BOEING PROPRIETARY

boeing_logoa.jpg
ATTACHMENT B

[***]


DAL-PA-05602-LA-2506972
[***]    Page 4
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506973


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to Model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    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 except as provided in Articles 10.1.1 and 10.1.3 of the Purchase Agreement.
7.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each Party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase

DAL-PA-05602-LA-2506973
[***]    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other Party. Notwithstanding the foregoing, either Party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing Party makes commercially reasonable efforts to notify the non-disclosing Party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing Party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such Party.

ACCEPTED AND AGREED TO this







Date:
January 12, 2026







DELTA AIR LINES, INC.

THE BOEING COMPANY




By:
/s/ Kristen Bojko

By:
/s/ Mira Zimmermann




Name:
Kristen Bojko

Name:
Mira Zimmermann




Title:
Vice President – Fleet

Title:
Attorney-In-Fact



DAL-PA-05602-LA-2506973
[***]    Page 2
BOEING PROPRIETARY

    The Boeing Company
    P.O. Box 3707
    Seattle, WA 98124 2207

DAL-PA-05602-LA-2506974


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]
8.    [***]
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 becoming the operator of the Aircraft and cannot be assigned, in whole or in part, without the prior written consent of Boeing except as provided in Sections 10.1.1 and 10.1.3 of the Purchase Agreement.
10.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each
DAL-PA-05602-LA-2506974
[***]    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.


ACCEPTED AND AGREED TO this







Date:
January 12, 2026







DELTA AIR LINES, INC.

THE BOEING COMPANY




By:
/s/ Kristen Bojko

By:
/s/ Mira Zimmermann




Name:
Kristen Bojko

Name:
Mira Zimmermann




Title:
Vice President – Fleet

Title:
Attorney-In-Fact


DAL-PA-05602-LA-2506974
[***]    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506975


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354


Subject:    [***]

Reference:    a) Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 Aircraft (Aircraft)

[***]

This letter agreement (Letter Agreement) is entered into on the date below. All terms used but not defined in this Letter Agreement have the same meaning as in the [***].
[***]
1.    [***]
2.    [***]
3.    Assignment.
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 except as provided in Sections 10.1.1 and 10.1.3 of the Purchase Agreement.
4.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each Party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other Party. Notwithstanding the foregoing, either Party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing Party makes

DAL-PA-05602-LA-2506975
[***]    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
commercially reasonable efforts to notify the non-disclosing Party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing Party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such Party.



ACCEPTED AND AGREED TO this







Date:
January 12, 2026







DELTA AIR LINES, INC.

THE BOEING COMPANY




By:
/s/ Kristen Bojko

By:
/s/ Mira Zimmermann




Name:
Kristen Bojko

Name:
Mira Zimmermann




Title:
Vice President – Fleet

Title:
Attorney-In-Fact



DAL-PA-05602-LA-2506975
[***]    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602- LA-2506976


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354


Subject:    [***]

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    [***]
4.    [***]
5.    [***]
6.    [***]
7.    [***]
8.    [***]
9.    [***]
10.    [***]
11.    Assignment.
Unless otherwise noted herein, the credit memoranda, payment schedules and other business considerations described in this Letter Agreement are provided as a financial accommodation to Customer and in consideration of Customer taking title to the Aircraft at time of delivery and becoming the operator of the Aircraft. This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of
[***]
DAL-PA-05602-LA-2506976    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg
Boeing except as expressly permitted under Articles 10.1.1 and 10.1.3 of the Purchase Agreement.


12.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.

ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


[***]
DAL-PA-05602-LA-2506976    Page 2
BOEING PROPRIETARY

boeing_logoa.jpg
ATTACHMENT A

[***]


[***]
DAL-PA-05602-LA-2506976    Page 3
BOEING PROPRIETARY

boeing_logoa.jpg
ATTACHMENT B

[***]


[***]
DAL-PA-05602-LA-2506976    Page 4
BOEING PROPRIETARY

boeing_logoa.jpg
The Boeing Company
P.O. Box 3707
Seattle, WA 98124 2207

DAL-PA-05602-LA-2506977


Delta Air Lines, Inc.
Department [***]
1030 Delta Boulevard
Atlanta, GA 30354

Subject:    [***]

Reference:    Purchase Agreement No. PA-05602 (Purchase Agreement) between The Boeing Company (Boeing) and Delta Air Lines, Inc. (Customer) relating to model 787-10 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.    [***]
2.    [***]
3.    Assignment.
This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing except as expressly permitted under Articles 10.1.1 and 10.1.3 of the Purchase Agreement.
4.    Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Each party will limit the disclosure of its contents to its employees with a need to know the contents for purposes of helping it perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of the other party. Notwithstanding the foregoing, either party may disclose this Letter Agreement (i) for the purpose of regulatory requirements, including without limitation registrations and filings pursuant thereto, or as otherwise required by law, provided that the disclosing party makes commercially reasonable efforts to notify the non-disclosing party in advance of such disclosure and considers in good faith all limitations on such disclosure requested by the non-disclosing party; (ii) for the purpose of disclosure to its auditors and its legal advisors on a need to know basis who themselves agree not to further disclose such information; and (iii) to the extent such information is publicly available other than as a result of the disclosure by or on behalf of such party.
DAL-PA-05602-LA-2506977
[***]    Page 1
BOEING PROPRIETARY

boeing_logoa.jpg


ACCEPTED AND AGREED TO this
Date:January 12, 2026
DELTA AIR LINES, INC.THE BOEING COMPANY
By:/s/ Kristen BojkoBy:/s/ Mira Zimmermann
Name:Kristen BojkoName:Mira Zimmermann
Title:Vice President – FleetTitle:Attorney-In-Fact


DAL-PA-05602-LA-2506977
[***]    Page 2
BOEING PROPRIETARY