Exhibit 10.1

CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) WOULD BE COMPETITIVELY HARMFUL IF PUBLICLY DISCLOSED. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS.
Supplemental Agreement No. 17
to
Purchase Agreement No. 03776
between
The Boeing Company
and
United Airlines, Inc.
Relating to Boeing Model 737 MAX Aircraft
THIS SUPPLEMENTAL AGREEMENT, entered into as of August 12, 2021, by and between THE BOEING COMPANY (Boeing) and UNITED AIRLINES, INC. (Customer) (SA-17);
WHEREAS, the parties hereto entered into Purchase Agreement No. 3776 dated July 12, 2012, as amended and supplemented (Purchase Agreement), relating to the purchase and sale of Boeing model 737 MAX aircraft (Aircraft). This Supplemental Agreement is an amendment to the Purchase Agreement; and
WHEREAS, Customer and Boeing agree to *** as follows:
***
NOW THEREFORE, in consideration of the mutual covenants herein contained, the parties agree to amend the Purchase Agreement as follows:
1.Table of Contents.
The “Table of Contents” is deleted in its entirety and replaced with the attached “Table of Contents” (identified by “SA-17”).
UAL-PA-03776         SA-17, Page 1
BOEING / UNITED AIRLINES, INC. PROPRIETARY
Supplemental Agreement No. 17 to
Purchase Agreement No. 03776
2.Tables.
Table 1.1 titled “*** 737-*** Aircraft Delivery, Description, Price and ***” is deleted in its entirety and replaced with the attached similarly titled Table 1 (identified by “SA-17”) to reflect the *** .
The Purchase Agreement will be deemed supplemented to the extent provided herein as of the date hereof and as so supplemented will continue in full force and effect.
The rest of the page is intentionally blank. Signature page follows.


UAL-PA-03776        SA-17, Page 2
BOEING / UNITED AIRLINES, INC. PROPRIETARY
Supplemental Agreement No. 17 to
Purchase Agreement No. 03776

EXECUTED IN DUPLICATE as of the day and year first written above.




THE BOEING COMPANYUNITED AIRLINES, INC.
/s/ Irma L. Krueger/s/ Ted Davidson
SignatureSignature
Irma L. KruegerTed Davidson
Printed NamePrinted Name
Attorney-in-Fact
Vice President - Procurement
TitleTitle

UAL-PA-03776        SA-17, Page 3
BOEING / UNITED AIRLINES, INC. PROPRIETARY

TABLE OF CONTENTS

ARTICLES
SA NUMBER
Article 1.Quantity, Model and Description
SA-15 §3.1
Article 2.Delivery Schedule
SA-15 §3.1
Article 3.Price
SA-15 §3.1
Article 4.Payment
SA-15 §3.1
Article 5.Additional Terms
SA-15 §3.1
TABLE
1.
737-*** Aircraft Delivery, Description, Price and ***
SA-9
1.1
*** 737-*** Aircraft Delivery, Description, Price and ***
SA-17
1A.
737-*** Aircraft Delivery, Description, Price and ***
SA-15
1B.
*** 737-*** Aircraft Delivery, Description, Price and ***
SA-16
1C.
*** 737-*** Aircraft Delivery, Description, Price and ***
SA-16
EXHIBITS
A-1
737-9 & *** 737-9Aircraft Configuration
SA-8
A-2
737-8 Aircraft Configuration
A-3
737-7 Aircraft Configuration
A-4
*** 737-10 Aircraft Configuration
SA-16
A-5
737-10 *** Aircraft Configuration
SA-14
B.Aircraft Delivery Requirements and Responsibilities
TABLE OF CONTENTS, CONTINUED
SUPPLEMENTAL EXHIBITS
SA NUMBER
AE1.
***/Airframe and ***
AE2.
***/Airframe and *** for the 737-10 Aircraft
SA-9 & SA-15 §3.1
BFE1.
BFE Variables 737-9 Aircraft
SA-7
BFE2.
BFE Variables 737-10 Aircraft
SA-9
UAL-PA-03776    TABLE OF CONTENTS    SA-17, Page 1 of 4
BOEING/UNITED AIRLINES, INC. PROPRIETARY

CS1.
Customer Support Variables
SA-9
EE1.
Engine Warranty and ***
SA-15 §3.1
SLP1.
Service Life Policy Components
LETTER AGREEMENTS
SA NUMBER
UAL-PA-03776-LA-1207637R4
*** Matters
SA-16
UAL-PA-03776-LA-1207638R3
***
SA-16
UAL-PA-03776-LA-1207640
Demonstration Flight Waiver
UAL-PA-03776-LA-1207643R3
Open Matters 737-*** and 737-*** Aircraft
SA-15
UAL-PA-03776-LA-1207646R4
Promotional Support
SA-15
UAL-PA-03776-LA-1207647
Seller Purchased Equipment
SA-15 §3.1
UAL-PA-03776-LA-1207649
Spare Parts Initial Provisioning
UAL-PA-03776-LA-1207650R5
Special Matters
SA-16
UAL-PA-03776-LA-1208055R1
***
SA-7
UAL-PA-03776-LA-1208122
***
SA-10
UAL-PA-03776-LA-1208123R1
*** for 737-*** Aircraft
SA-9
UAL-PA-03776-LA-1208157R3
***
SA16-
UAL-PA-03776-LA-1208234
Privileged and Confidential Matters
UAL-PA-03776-LA-1208596R2AGTA MattersSA-13
UAL-PA-03776-LA-1208238
Assignment Matters
TABLE OF CONTENTS, CONTINUED
LETTER AGREEMENTS
SA NUMBER
UAL-PA-03776-LA-1208869R2Delivery *** MattersSA-16
UAL-PA-03784-LA-1207869737 Production Adjustments
UAL-PA-03776-LA-1606848R2
*** Special MAX Aircraft
SA-9
UAL-PA-03776-LA-1703685
737-*** Aircraft ***
SA-9
UAL-PA-03776-LA-1703743
2017 ***
SA-9
UAL-PA-03776-LA-1703858R1
*** for the 737-*** Aircraft
SA-10 & SA-15 §3.1
*** Commitment for the 737-*** Aircraft
§5.1.2 of SA-9
UAL-PA-03776    TABLE OF CONTENTS    SA-17, Page 2 of 4
BOEING/UNITED AIRLINES, INC. PROPRIETARY

UAL-PA-3776-LA-1801367
Loading of Customer Software
SA-10
UAL-PA-3776-LA-1801619
Installation of Cabin Systems Equipment
SA-10
UAL-PA-3776-LA-1807469
*** From *** for 737-*** Aircraft
SA-11
UAL-PA-3776-LA-2001766R1
Certain Special Matters
SA-14
UAL-PA-3776-LA-2103143
Airline Operational Efficacy Matter
SA-16
UAL-PA-3776-LA-2103288
***
SA-16


UAL-PA-03776    TABLE OF CONTENTS    SA-17, Page 3 of 4
BOEING/UNITED AIRLINES, INC. PROPRIETARY


SUPPLEMENTAL AGREEMENTS
DATED AS OF
Supplemental Agreement No. 1June 17, 2013
Supplemental Agreement No. 2January 14, 2015
Supplemental Agreement No. 3May 26, 2015
Supplemental Agreement No. 4June 12, 2015
Supplemental Agreement No. 5January 20, 2016
Supplemental Agreement No. 6February 8, 2016
Supplemental Agreement No. 7December 27, 2016
Supplemental Agreement No. 8June 7, 2017
Supplemental Agreement No. 9June 15, 2017
Supplemental Agreement No. 10May 15, 2018
Supplemental Agreement No. 11September 25, 2018
Supplemental Agreement No. 12December 12, 2018
Supplemental Agreement No. 13March 20, 2020
Supplemental Agreement No. 14June 30, 2020
Supplemental Agreement No. 15February 26, 2021
Supplemental Agreement No. 16June 27, 2021
Supplemental Agreement No. 17August 12, 2021
    

UAL-PA-03776    TABLE OF CONTENTS    SA-17, Page 4 of 4
BOEING/UNITED AIRLINES, INC. PROPRIETARY

Table 1.1 To Purchase Agreement No. 03776
*** 737-*** Aircraft Delivery, Description, Price and ***
Airframe Model/MTOW:737-****** pounds^Detail Specification:***4Q11 External Fcst~4Q11 External Fcst - Engines
Engine Model/Thrust:****** pounds+Airframe Price Base Year/*** Formula:******
Airframe Price:$***Engine Price Base Year/*** Formula:******
*** Features:$***
Sub-Total of Airframe and Features:$***Airframe *** Data:
Engine Price (Per Aircraft):$***Base Year Index (ECI):***
Aircraft Basic Price (Excluding BFE/SPE):$***Base Year Index (CPI):***
Buyer Furnished Equipment (BFE) Estimate:$***
Seller Purchased Equipment (SPE) Estimate:$***
Deposit per Aircraft:$***
# of AircraftDelivery Date***Manufacturer Serial NumberActual or Nominal Delivery ******* Estimate*** Per Aircraft (Amts. Due/*** Prior to Delivery):
Number ofFactor*** Base************
Aircraft***Price Per A/P***%***%***%***%
******************$***$***$***$***$***
Total in this Table:***
* Nominal delivery month, subject to revision pursuant to Letter Agreement number UAL-PA-03776-LA-1207643R3 entitled "Open Matters 737-9 and 737-10 Aircraft", including successors thereof.
Note: Serial Numbers are provided as guidance only and are subject to change.
^ - ***
+ - ***
***
UAL-PA-03776 APR: 116759 Boeing / United Airlines, Inc. Proprietary Table 1.1 per SA-17, Page 1