EX-10.178



 Exhibit 10.178 

CONFIDENTIAL MATERIAL APPEARING IN THIS DOCUMENT HAS BEEN OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION IN ACCORDANCE WITH THE
SECURITIES ACT OF 1933, AS AMENDED, AND RULE 24B-2 PROMULGATED THEREUNDER. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. 

Supplemental Agreement No. 6 
 to

 Purchase Agreement No. 3860 

between 
 The Boeing Company 

and 
 United Airlines, Inc. 

Relating to Boeing Model 787 Aircraft 

THIS SUPPLEMENTAL AGREEMENT, entered into as of December 31, 2015, by and between THE BOEING COMPANY (Boeing) and
UNITED AIRLINES, INC. (a Delaware corporation formerly known as Continental Airlines, Inc. and successor by merger to United Air Lines, Inc.) (Customer); 

WHEREAS, the parties hereto entered into Purchase Agreement No. 3860 dated September 27, 2012, as amended and supplemented
(Purchase Agreement), relating to the purchase and sale of Boeing model 787 aircraft (Aircraft). This Supplemental Agreement is an amendment to the Purchase Agreement; 

WHEREAS, through *** Supplemental Agreement Number 5 to the Purchase Agreement, *** dated May 12, 2015, Boeing and Customer
agreed to *** firm 787-*** aircraft for *** 787-*** aircraft and to *** 787-*** firm aircraft with *** 787-***; 
 WHEREAS,
consistent with such prior transactions Boeing and Customer now agree to a *** of *** firm 787-*** aircraft for *** firm 787-*** aircraft and to the *** of these *** 787-*** firm aircraft with *** 787-*** as follows: 

(i) Boeing and Customer agree to *** Firm 787-*** Aircraft to the Purchase Agreement as Block C Aircraft as such terms are
defined in *** and are further identified in Figure 1 below. 
  

	
	Figure 1
	
	 Delivery Month

	 ***

	 ***



  

					
	UAL-PA-3860	 	SA-6	 	Page 1
	BOEING / UNITED AIRLINES, INC. PROPRIETARY









 (ii) Boeing and Customer agree to *** the following *** 787-*** Firm Aircraft and
*** them with *** 787-*** Aircraft in the delivery months with option exercise expiry dates as specified below: 
  

							
	 Model
	 	 *** Firm Aircraft

Delivery Month
	 	 *** Aircraft Delivery

Month**
	 	 Option

Exercise

Expiry Date

	 ***
	 	***	 	***	 	***
	 ***
	 	***	 	***	 	***

 ** - The nominal delivery month above is subject to revision by plus or minus one month.
Boeing will advise Customer of the scheduled delivery month at the time of Customer’s exercise of its rights. 

WHEREAS, Boeing and Customer agree to apply *** 787-*** previously Firm Aircraft *** under this Supplemental Agreement No. 6
*** for the *** new model 787-*** Aircraft added under this Supplemental Agreement No. 6; and *** Customer’s *** of Supplemental Agreement No. 6 after application of *** (as that term is defined in Letter Agreement No. *** entitled “Option
Aircraft” ***) received by Boeing from Customer. 
 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-6”). 
  

	2.	Tables. 

 2.1. “Table 1”, 787-10 Aircraft with
GENX-1B*** Engines Delivery, Description, Price and Advance Payments, is deleted in its entirety and replaced with the attached similarly titled “Table 1” (identified by “SA-6”). 

2.2. “Table 1, 787-9 Aircraft Delivery, Description, Price and Advance Payments for *** Firm 787-9 Aircraft”
(identified by “SA-6”) is added to the Purchase Agreement. 
  

	3.	Letter Agreements. 

 3.1. Attachment B-1 to Letter Agreement
UAL-PA-03860-LA-1209265R1 entitled “787-10 with GENX-1B*** Engines: Option Aircraft Delivery, Description, Price and Advance Payments” is deleted in its entirety and replaced with the attached Attachment B-1 (identified by
“SA-6”). 

  

					
	UAL-PA-3860	 	SA-6	 	Page 2
	BOEING / UNITED AIRLINES, INC. PROPRIETARY

  








 3.2. Letter Agreement UAL-PA-03860-LA-1209413A1R1 entitled “Special
Matters — Amendment 1” is deleted in its entirety and replaced with the attached similarly titled Letter Agreement UAL-PA-03860-LA-1209413A1R2 (identified by “SA-6”). 

The Purchase Agreement will be deemed to be supplemented to the extent herein provided as of the date hereof and as so supplemented will
continue in full force and effect. 
 The rest of this page is left intentionally blank. 

  

					
	UAL-PA-3860	 	SA-6	 	Page 3
	BOEING / UNITED AIRLINES, INC. PROPRIETARY

  








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

 

			
	 THE BOEING COMPANY
  
	 	 UNITED AIRLINES, INC.
  

	      
	 	      

	Signature	 	Signature
		
	 /s/ I. L. Krueger
	 	 /s/ Gerald Laderman

	Printed Name	 	Printed Name
		
	 Attorney-in-Fact
	 	 Senior Vice President - Finance and

acting Chief Financial Officer

	Title	 	Title


  

					
	UAL-PA-3860	 	SA-6	 	Page 4
	BOEING / UNITED AIRLINES, INC. PROPRIETARY

  








 TABLE OF CONTENTS 

 

					
	 
ARTICLES
	  	 	  	SA
NUMBER
	 Article 1.
	  	Quantity, Model and Description	  	SA-1
			
	 Article 2.
	  	Delivery Schedule	  	SA-1
			
	 Article 3.
	  	Price	  	SA-1
			
	 Article 4.
	  	Payment	  	SA-1
			
	 Article 5.
	  	Additional Terms	  	SA-1
		
	 TABLE
	  	
	       1.
	  	 787-8 with GENX-1B*** Engines Aircraft Information Table ***
	  	SA-3
			
	       1.
	  	 787-9 with GENX-1B*** Engines Aircraft Information Table ***
	  	SA-5
			
	       1 
	  	 Table 1, 787-*** Aircraft Delivery, Description, Price and Advance Payments for *** Firm 787-*** Aircraft
	  	SA-6
			
	       1.
	  	 787-10 with GENX-1B*** Engines Aircraft Information Table
	  	SA-6
		
	 EXHIBITS
	  	
			
	 A1.
	  	 787-8 Aircraft Configuration ***
	  	
			
	 A2.
	  	 787-9 Aircraft Configuration ***
	  	SA-4
			
	 A3.
	  	 787-10 Aircraft Configuration
	  	SA-1
			
	 B.  
	  	 Aircraft Delivery Requirements and Responsibilities
	  	
		
	 SUPPLEMENTAL EXHIBITS
	  	
			
	 AE1.
	  	 Escalation Adjustment/Airframe and Optional Features
	  	
			
	 BFE1.
	  	 BFE Variables
	  	SA-1
			
	 CS1.
	  	 Customer Support Document
	  	
			
	 EE1.
	  	 Engine Escalation/Engine Warranty ***
	  	
			
	 SLP1.
	  	 Service Life Policy Components
	  	


  

					
	P.A. 3860	 	TABLE OF CONTENTS, Page 1 of 5	 	SA-6
	BOEING/UNITED AIRLINES, INC. PROPRIETARY









 TABLE OF CONTENTS, CONTINUED 

 
  

					
	LETTER AGREEMENTS	  	 SA 

NUMBER

	UAL-PA-03860-LA-1209247	  	787 e-Enabling	  	
			
	UAL-PA-03860-LA-1209264	  	Open Configuration Matters	  	
			
	UAL-PA-03860-LA-1209265R1	  	Option Aircraft	  	SA-1
			
		  	 Attachment A, 787-*** Option Aircraft Delivery, Description, Price and Advance Payments (DELETED)
	  	SA-1
			
		  	 Attachment B-1, 787-*** with GENX-1B*** Engines: Option Aircraft Delivery, Description, Price and Advance
Payments
	  	SA-6
			
		  	 Attachment B-2, 787-*** with TRENT1000-*** Engines: Option Aircraft Delivery, Description, Price and Advance Payments
(DELETED)
	  	SA-3
			
	UAL-PA-03860-LA-1209409	  	Spare Parts Initial Provisioning	  	
			
	UAL-PA-03860-LA-1209410	  	 Special Matters Relating to COTS Software and End User License Agreements
	  	
			
	UAL-PA-03860-LA-1209411	  	 Special Terms – Seats and In-flight Entertainment
	  	
			
	UAL-PA-03860-LA-1209417	  	Model 787 Post-Delivery Software & Data Loading	  	
		
	 CONFIDENTIAL LETTER AGREEMENTS
	  	
			
	UAL-PA-03860-LA-1209236R1	  	 Model Substitution
	  	SA-1
			
		  	 Attachment A, 787-9 Airframe Pricing of Substitution Aircraft with General Electric GEnx-1B*** and Rolls Royce Trent 1000-***
engines
	  	SA-1
			
		  	 Attachment B, 787-10 with General Electric GEnx-1B*** and Rolls Royce TRENT 1000-*** Engines
	  	SA-1
			
		  	 Attachment C, 787-8 with General Electric GEnx-1B*** and Rolls Royce TRENT 1000-***
	  	SA-1


  

					
	P.A. 3860	 	TABLE OF CONTENTS, Page 2 of 4	 	SA-6
	BOEING / UNITED AIRLINES, INC. PROPRIETARY









 TABLE OF CONTENTS, CONTINUED 

 
  

					
	 CONFIDENTIAL LETTER AGREEMENTS, continued
	  	SA
NUMBER
			
	 UAL-PA-03860-LA-1209412
	 	Spare Parts Commitment	  	
			
	 UAL-PA-03860-LA-1209413R1
	 	Special Matters	  	SA-1
			
	 UAL-PA-03860-LA-1209413A1R2
	 	Special Matters – Amendment 1	  	SA-6
			
	 UAL-PA-03860-LA-1209414
	 	Other Special Matters	  	
			
	 UAL-PA-03860-LA-1209413A1
	 	Other Special Matters - Amendment 1	  	SA-1
			
	 UAL-PA-03860-LA-1209416R1
	 	Promotional Support	  	SA-2
			
	 UAL-PA-03860-LA-1209430
	 	Performance Guarantees	  	
			
	 UAL-PA-03860-LA-1209455
	 	*** – TERMINATED	  	SA-1
			
	 UAL-PA-03860-LA-1209429
	 	***	  	
			
	 UAL-PA-03860-LA-1209618R1
	 	Alternate Engine Selection	  	SA-1
			
	 6-1162-ELP-0794
	 	*** Program- *** Aircraft	  	
			
	 6-1162-ELP-0795
	 	*** Program- *** Aircraft	  	
			
	 UAL-PA-03860-LA-1301368
	 	Performance Guarantees (787-10)	  	SA-1
			
	 UAL-PA-03860-LA-1301373
	 	787-10 Aircraft Open Configuration and Other Matters	  	SA-1
			
	 UAL-PA-03860-LA-1301375
	 	 Provisions Relating to Customer’s *** for 787-10 Aircraft
	  	SA-1
			
	 UAL-PA-03860-LA-1301377
	 	787-10 ***	  	SA-1
			
	 UAL-PA-03860-LA-1301377A1
	 	787-10 *** – Amendment 1	  	SA-4
			
	 UAL-PA-03860-LA-1301380
	 	787-10 Program Launch	  	SA-1
			
	 UAL-PA-03860-LA-1500017
	 	Demonstration Flight Waiver	  	SA-4
			
	 UAL-PA-03860-LA-1500059
	 	Installation of Cabin Systems Equipment	  	SA-4


  

					
	P.A. 3860	 	TABLE OF CONTENTS, Page 3 of 4	 	SA-6
	BOEING / UNITED AIRLINES, INC. PROPRIETARY










			
	 SUPPLEMENTAL AGREEMENTS
	  	 DATED AS OF

		
	 Supplemental Agreement No. 1
	  	June 17, 2013
		
	 Supplemental Agreement No. 2
	  	December 16, 2013
		
	 Supplemental Agreement No. 3
	  	July 22, 2014
		
	 Supplemental Agreement No. 4
	  	January 14, 2015
		
	 Supplemental Agreement No. 5
	  	May 12, 2015
		
	Supplemental Agreement No. 6	  	December 31, 2015


  

					
	P.A. 3860	 	TABLE OF CONTENTS, Page 4 of 4	 	SA-6
	BOEING / UNITED AIRLINES, INC. PROPRIETARY









 Table 1 to Purchase Agreement No. 3860 

787-10 Aircraft with GENX-1B*** Engines Delivery, Description, Price and Advance Payments 

(787-10/GE/***) 
  

																			
								
	 Airframe Model/MTOW:
	  	787-10	 	 	*** pounds	  	 		  	 Detail Specification:
	  		  	 	***	  	  	
								
	 Engine Model/Thrust:
	  	GENX-1B***1	 	 	*** pounds	  	 		  	 Airframe Price Base Year/Escalation Formula:
	  	***	  				  	***
								
	 Airframe Price:
	  		 	$	***	  	 		  	 Engine Price Base Year/Escalation Formula:
	  	***	  				  	***
								
	 Optional Features:
	  		 	$	***	  	 		  	 Airframe Escalation Data: 
	  		  				  	
		  		 	  
	  
	 	 		  		  		  				  	
							
	 Sub-Total of Airframe and Features:
	 	$	***	  	 		  	 Base Year Index (ECI):
	  		  	 	***	  	  	
							
	 Engine Price (Per Aircraft) :
	 	$	***	1 	 		  	 Base Year Index (CPI):
	  		  	 	***	  	  	
		  		 	  
	  
	 	 		  		  		  				  	
							
	 Aircraft Basic Price (Excluding BFE/SPE):
	 	$	***	  	 		  	 Engine Escalation Data: 
	  		  				  	
		  		 	  
	  
	 	 		  		  		  				  	
							
	 Buyer Furnished Equipment (BFE) Estimate:
	 	$	***	  	 		  	 Base Year Index (ECI):
	  		  	 	***	  	  	
		  		 	  
	  
	 	 		  		  		  				  	
							
	 In-Flight Entertainment (IFE) Estimate:
	 	$	***	  	 		  	 Base Year Index (CPI):
	  		  	 	***	  	  	
							
	 Refundable Deposit/Aircraft at Proposal Accept:
	 	$	***	  	 		  		  		  				  	

  

																					
	 Delivery

Date
	 	Number of
Aircraft	 	Escalation
Factor
(Airframe)	 	Escalation
Factor
(Engine)	 	 	 	Serial
Number
(Subject to
Change)	 	Escalation Estimate
Adv Payment Base
Price Per A/P	 	
Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):

	 	 	 	 	 	 	 	***	 	***	 	***	 	***
	 	 	 	 	 	 	 	 ***
	 	 ***
	 	 ***
	 	 ***

	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***
	***	 	***	 	***	 	***	 	*	 	***	 	$***	 	$***	 	$***	 	$***	 	$***

  

  

					
		 	Boeing Proprietary	 	787-10 with GE Engines Table 1 (SA-6), Page 1









 Table 1 to Purchase Agreement No. 3860 

787-10 Aircraft with GENX-1B*** Engines Delivery, Description, Price and Advance Payments 

(787-10/GE/***) 
  

																					
	 Delivery

Date
	  	Number of
Aircraft	  	Escalation
Factor
(Airframe)	  	Escalation
Factor
(Engine)	  	 	 	Serial
Number
(Subject to
Change)	  	Escalation Estimate
Adv Payment Base
Price Per A/P	  	
Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):

	  	  	  	  	 	  	  	***	  	***	  	***	  	***
	  	  	  	  	 	  	  	 ***
	  	 ***
	  	 ***
	  	 ***

	***	  	***	  	***	  	***	  	 *
	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	***	  	***	  	***	  	 *
	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	***	  	***	  	***	  	 *
	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	***	  	***	  	***	  	**	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	***	  	***	  	***	  	**	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	***	  	***	  	***	  	**	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	***	  	***	  	***	  	**	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	***	  	***	  	***	  	**	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	***	  	***	  	***	  	**	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	***	  	***	  	***	  	**	 	***	  	$***	  	$***	  	$***	  	$***	  	$***
		  	  
	  		  		  		 		  		  		  		  		  	
	Total:	  	23	  		  		  		 		  		  		  		  		  	

  

	1 	Engine model, thrust and pricing are subject to *** to deliver GEnx-1B*** thrust rating at GEnx-1B*** price. 

  

	*	*** Escalation Factors*** 


	**	*** Escalation Factors*** 


  

					
		 	Boeing Proprietary	 	787-10 with GE Engines Table 1 (SA-6), Page 2









 Table 1 to Purchase Agreement No. 3860 

787-9 Aircraft Delivery, Description, Price and Advance Payments for *** Firm 787-9 Aircraft 

(787-9/GE/***) 
  

																			
	 Airframe Model/MTOW:
	  	787-9	 	 	*** pounds1	  	 		  	 Detail Specification:
	  		  	 	***	  	  	
								
	 Engine Model/Thrust:
	  	GENX-1B***2	 	 	*** pounds	  	 		  	 Airframe Price Base Year/Escalation Formula:
	  	***	  				  	***
								
	 Airframe Price:
	  		 	$	***	  	 		  	 Engine Price Base Year/Escalation Formula:
	  	***	  				  	***
								
	 Optional Features:
	  		 	$	***	  	 		  	 Airframe Escalation Data: 
	  		  				  	
		  		 	  
	  
	 	 		  		  		  				  	
							
	 Sub-Total of Airframe and Features:
	 	$	***	  	 		  	 Base Year Index (ECI):
	  		  	 	***	  	  	
							
	 Engine Price (Per Aircraft):
	 	$	***	  	 		  	 Base Year Index (CPI):
	  		  	 	***	  	  	
		  		 	  
	  
	 	 		  		  		  				  	
							
	 Aircraft Basic Price (Excluding BFE/SPE):
	 	$	***	  	 		  	 Engine Escalation Data: 
	  		  				  	
		  		 	  
	  
	 	 		  		  		  				  	
							
	 Buyer Furnished Equipment (BFE) Estimate:
	 	$	***	  	 		  	 Base Year Index (ECI):
	  		  	 	***	  	  	
							
	 In-Flight Entertainment (IFE) Estimate:
	 	$	***	  	 		  	Base Year Index (CPI):	  		  	 	***	  	  	

  

																			
	 Scheduled
Delivery

Date
	  	Number
of
Aircraft	  	Escalation
Factor
(Airframe)	  	Escalation
Factor
(Engine)	  	Serial
Number	  	Escalation Estimate
Adv Payment Base
Price Per A/P	  	
Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):

	  	  	  	  	  	  	***	  	***	  	***	  	***
	  	  	  	  	  	  	 ***
	  	 ***
	  	 ***
	  	 ***

								
	Block C Aircraft 1,2,3	  		  		  		  		  		  		  	
	***	  	  ***  	  	***	  	***	  	***	  	$***	  	$***	  	$***	  	$***	  	$***
	***	  	  ***  	  	***	  	***	  	***	  	$***	  	$***	  	$***	  	$***	  	$***
	Total Block C	  	  ***  	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 

  

	1	MTOW provided in accordance with MTOW Article 3.2 of Letter Agreement 6-1162-RCN-1936. 


	2	Conditional on a GE agreement to deliver Genx-1B*** thrust rating at the Genx-1B*** price. 


	3	The Block C Aircraft shall be considered Block B Aircraft as defined pursuant to *** for purposes of Letter Agreement 6-1162-RCN entitled “***”. 


	4	The *** 787-9 Aircraft specified above are “Block C Aircraft” as such term is defined in ***, as amended and supplemented ***. 


  

					
	APR 71359	 	Boeing / United Airlines, Inc. Proprietary	 	787-9 Table 1, Page 1, SA-6









 Attachment B-1 to Letter Agreement UAL-PA-03860-LA-120965R1 

787-10 Option Aircraft with GENX-1B*** 

Engines Delivery, Description, Price and Advance Payments 

(787-10/GE/***) 
  

																			
	 Airframe Model/MTOW:
	  	787-10	  	 	*** pounds	  	 		  	 Detail Specification:
	  		  	 	***	  	  	
								
	 Engine Model/Thrust:
	  	GENX-1B***1	  	 	*** pounds	  	 		  	 Airframe Price Base Year/Escalation Formula:
	  	***	  				  	***
								
	 Airframe Price:
	  		  	$	***	  	 		  	 Engine Price Base Year/Escalation Formula:2
	  	***	  				  	***
								
	 Optional Features:
	  		  	$	***	  	 		  	 Airframe Escalation Data: 
	  		  				  	
		  		  	  
	  
	 	 		  		  		  				  	
							
	 Sub-Total of Airframe and Features:
	  	$	***	  	 		  	 Base Year Index (ECI):
	  	***	  				  	
								
	 Engine Price (Per Aircraft):
	  		  	$	***	1 	 		  	 Base Year Index (CPI):
	  	***	  				  	
		  		  	  
	  
	 	 		  		  		  				  	
							
	 Aircraft Basic Price (Excluding BFE/SPE):
	  	$	***	  	 		  	 Engine Escalation Data: 
	  		  				  	
		  		  	  
	  
	 	 		  		  		  				  	
							
	 Buyer Furnished Equipment (BFE) Estimate:
	  	$	***	  	 		  	 Base Year Index (ECI):
	  	***	  				  	
							
	 In-Flight Entertainment (IFE) Estimate:
	  	$	***	  	 		  	 Base Year Index (CPI):
	  	***	  				  	
							
	 Non-Refundable Deposit/Aircraft at Def Agreement
	  	$	***	  	 		  		  		  				  	

  

																			
	 Delivery
Date
	  	Number of
Aircraft	 	Escalation
Factor
(Airframe)	 	Escalation
Factor
(Engine)	 	Option
Exercise	 	Escalation Estimate
Adv Payment Base
Price Per A/P	 	 Advance Payment Per Aircraft (Amts. Due/Mos. Prior
to Delivery):

	  	 	 	 	Expiry	 	 	***	  	***	  	***	  	***
	  	 	 	 	Date	 	 	 ***
	  	 ***
	  	 ***
	  	 ***

	*** ++	  	***	 	***	 	***	 	*** *	 	$***	 	$***	  	$***	  	$***	  	$***
	*** ++	  	***	 	***	 	***	 	*** *	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***


  

					
	APR64695-1F.TXT	 	Boeing Proprietary	 	787-10 with GE Engines Table 1 (SA-6), Page 1









 Attachment B-1 to Letter Agreement UAL-PA-03860-LA-120965R1 

787-10 Option Aircraft with GENX-1B*** 

Engines Delivery, Description, Price and Advance Payments 

(787-10/GE/***) 
  

																			
	 Delivery
Date
	  	Number of
Aircraft	 	Escalation
Factor
(Airframe)	 	Escalation
Factor
(Engine)	 	Option
Exercise	 	Escalation Estimate
Adv Payment Base
Price Per A/P	 	 Advance Payment Per Aircraft (Amts. Due/Mos. Prior
to Delivery):

	  	 	 	 	Expiry	 	 	***	  	***	  	***	  	***
	  	 	 	 	Date	 	 	 ***
	  	 ***
	  	 ***
	  	 ***

	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
	***	  	***	 	***	 	***	 	***	 	$***	 	$***	  	$***	  	$***	  	$***
		  	  
	 		 		 		 		 		  		  		  	
	Total:	  	***	 		 		 		 		 		  		  		  	

  

	1	Engine model, thrust and pricing are subject to *** to deliver GEnx-1B*** thrust rating at GEnx-1B*** price. 


	2	Base year pricing is subject to engine manufacturer confirmation. 


	*	The option exercise expiry date for the *** 787-10 Option Aircraft (as specified above) supersedes §4.1 of Letter Agreement UAL-PA-03860-LA-1209265R1 entitled “Option Aircraft” 


	++	The delivery schedule for the *** 787-10 Option Aircraft is a nominal delivery month and is subject to revision by plus or minus one month. Boeing will advise Customer of the scheduled delivery month at the time of
Customer’s exercise of its rights. 


  

					
	APR 64695-1F.TXT	 	Boeing Proprietary	 	787-10 with GE Engines Table 1 (SA-6), Page 2










  


							
	 




	  		  		  	 The Boeing Company
 P.O. Box 3707

Seattle, WA 98124-2207


  

UAL-PA-03860-LA-1209413A1R2 
 United Airlines, Inc. 

233 South Wacker Drive 
 Chicago, Illinois 60606 

 

			
	Subject:	  	Special Matters — Amendment 1
		
	Reference:    	  	 Purchase Agreement No. 3860 (Purchase Agreement) between The Boeing Company (Boeing) and United Airlines, Inc. relating to Model 787
aircraft (Aircraft)


 This letter agreement UAL-PA-03860-LA-1209413A1R2 (Amending Letter Agreement)
amends and supplements the Purchase Agreement and amends and supplements certain terms in Letter Agreement UAL-PA-03860-LA-1209413 (the Letter Agreement) ), and supersedes and replaces in its entirety letter agreement UAL -PA -03860 -LA-1209413A1R1. All terms used and not defined in this Letter Agreement have the same meaning as in the Purchase Agreement. 

 

	1.	 Amendments to Article 1 of the Letter Agreement. 



New Article 1.4 is hereby added as follows: 

1.4. The parties agree that the *** 787-*** Aircraft added by SA-6 with delivery months during 

(i) ***; and 

(ii) *** 

shall, if Customer exercises its rights in such 787-*** Aircraft, be deemed to be 787-*** Aircraft for all
purposes under the Purchase Agreement and thereby remain entitled to the corresponding 787-*** Aircraft credit memoranda. 

  

					
	UAL-PA-03860-LA-1209413A1R2	 		 	Page 1
	Special Matters	 		 	SA-6
	BOEING / UNITED AIRLINES, INC. PROPRIETARY









 



 
  

	2.	 Amendments to Article 4 of the Letter Agreement. 



4.4    Special *** Provisions for the Launch Aircraft. With respect to 

(i) the *** 787-10 Aircraft listed in Table 1 to the Purchase Agreement as of the effective date of Supplemental Agreement No.
6 to the Purchase Agreement and 
 (ii) the *** 787-*** Aircraft specified in Figure 1 below; (787-10 Aircraft and 787-***
Aircraft specified in (i) and (ii) herein are each a Launch Aircraft), the parties agree that *** of the Article 4.1 *** obligation will be *** delivery of each Launch Aircraft (Launch Aircraft *** Obligation). At time of delivery
of each Launch Aircraft, Boeing will *** to *** the Launch Aircraft *** Obligation. 
  

			
	Figure 1
	 Model
	  	*** Aircraft Delivery
Month/Quarter at the Effective Date
of this Letter Agreement
	 787-***
	  	***
	 787-***
	  	***
	 787-***
	  	***
	 787-***
	  	***

  

	3.	Confidential Treatment. 

 Boeing and Customer understand that certain
information contained in this Letter Agreement, including any attachments hereto, is considered by both parties to be confidential. Boeing and Customer agree that each party will treat this Letter Agreement and the information contained herein
as confidential and will not, without the other party’s prior written consent, disclose this Letter Agreement or any information contained herein to any other person or entity except as may be required by applicable law or governmental
regulations. 

  


  

					
	UAL-PA-03860-LA-1209413A1R2	 		 	Page 2
	Special Matters	 		 	SA-6
	BOEING / UNITED AIRLINES, INC. PROPRIETARY









 



 
  
 Very truly yours, 

 

			
	THE BOEING COMPANY
		
	By:	 	 /s/ I. L. Krueger

		
	Its:	 	 Attorney-In-Fact


  

			
	ACCEPTED AND AGREED TO this
		
	 Date:
	 	 December 31, 2015



 

			
	UNITED AIRLINES, INC.
		
	 By:
	 	 /s/ Gerald Laderman

		
	 Its:
	 	 Senior Vice President - Finance and

acting Chief Financial Officer


  

  

					
	UAL-PA-03860-LA-1209413A1R2	 		 	Page 3
	Special Matters	 		 	SA-6
	BOEING / UNITED AIRLINES, INC. PROPRIETARY