Document:

EX-10.6

 Exhibit 10.6 

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. 

LETTER AGREEMENT NO. 14 
 TO THE
AIRBUS A350-900XWB PURCHASE AGREEMENT 
 dated as of March 5, 2010 

between 
 AIRBUS S.A.S. 

and 
 UNITED AIRLINES, INC. 

This Letter Agreement No. 14 (hereinafter referred to as the “Letter Agreement”) is entered into as of May 6, 2016 by and between
AIRBUS S.A.S., a societe par actions simplifiee, organized and existing under the laws of the Republic of France, having its registered office located at 2, Rond Point Maurice Bellonte, 31700 Blagnac (France) (hereinafter referred to as the
“Seller”), and UNITED AIRLINES, INC., a corporation organized and existing under the laws of the State of Delaware, United States of America, having its principal corporate offices located at 233 South Wacker Drive, Chicago, Dlinois
60606 (hereinafter referred to as the “Buyer”). 
 WHEREAS, the Buyer and the Seller have entered into the AIRBUS A350-900XWB Purchase
Agreement, dated as of March 5, 2010 (which agreement as previously amended and supplemented with all Exhibits, Appendices and Letter Agreements attached thereto is hereinafter called the “Agreement”), and 

WHEREAS, the Buyer and the Seller have agreed to set forth in this Letter Agreement certain additional terms and conditions regarding the sale
of the Aircraft. Capitalized terms used herein and not otherwise defined in this Letter Agreement will have the meanings assigned thereto in the Agreement. The terms “herein,” “hereof’ and “hereunder” and words of
similar import refer to this Letter Agreement. 
 Both parties agree that this Letter Agreement will constitute an integral, nonseverable part of said
Agreement, that the provisions of said Agreement are hereby incorporated herein by reference, and that this Letter Agreement will be governed by the provisions of said Agreement, except that if the Agreement and this Letter Agreement have specific
provisions which are inconsistent, the specific provisions contained in this Letter Agreement will govern. 

  
 CT0900252 - United
Airlines, Inc. - A350-900XWB Purchase Agreement-Letter Agreement No. 14        LA14-1 
 AIRBUS
S.A.S. & UNITED AIRLINES, INC. - PROPRIETARY AND CONFIDENTIAL 

	1.	*** 

 *** 
  

	2.	*** 

 *** 
  

	3.	Assignment 

 Notwithstanding any other provision of this Letter Agreement or of
the Agreement, this Letter Agreement and the rights and obligations of the Buyer herein shall not be assigned or transferred in any manner, and any attempted assignment or transfer in contravention of the provisions of this Clause shall be void and
of no force or effect. 
  

	4.	Law and Jurisdiction 

 This Letter Agreement shall be governed by, and construed in
accordance with, the laws of the state of New York and the provisions of Clause 22.6 of the Agreement shall apply to this Letter Agreement. 
  

	5.	Confidentiality 

 This Letter Agreement (and its existence) shall be treated by
both parties as confidential and shall not be released (or revealed) in whole or in part to any third party without the prior consent of the other party. In particular, each party agrees not to make any press release concerning the whole or any part
of the contents and/or subject matter hereof or of any future addendum hereto without the prior consent of the other party. 

  
 CT0900252 - United
Airlines, Inc. - A350-900XWB Purchase Agreement-Letter Agreement No. 14        LA14-2 
 AIRBUS
S.A.S. & UNITED AIRLINES, INC. - PROPRIETARY AND CONFIDENTIAL 

 If the foregoing correctly sets forth our understanding, please execute two (2) originals in the space provided
below and return one (1) original of this Letter Agreement to the Seller. 
  

									
	Agreed and Accepted	 		 	Agreed and Accepted
			
	For and on behalf of	 		 	For and on behalf of
			
	UNITED AIRLINES, INC.	 		 	AIRBUS S.A.S.
					
	By:	 	 /s/ Ron Baur
	 		 	By:	 	 /s/ Christopher Mourey

					
	Its:	 	 VP Fleet
	 		 	Its:	 	 Senior Vice President Contracts

					
	Date:	 	 5-6-16
	 		 	Date:	 	 5-6-16

  
 Cf0900252 - United
Airlines, Inc. - A350-900XWB Purchase Agreement-Letter Agreement No. 14        LA14-3 
 AIRBUS
S.A.S. & UNITED AIRLINES, INC. - PROPRIETARY AND CONFIDENTIALEX-10.7

 Exhibit 10.7 

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. 12 
 to

 Purchase Agreement Number 03784 

Between 
 The Boeing Company 

and 
 United Airlines, Inc. 

Relating to Boeing Model 737 Aircraft 

THIS SUPPLEMENTAL AGREEMENT is entered into as of June 24, 2016 by and between THE BOEING COMPANY (Boeing) and UNITED AIRLINES, INC.
(Customer); 
 WHEREAS, the parties hereto entered into Purchase Agreement Number 03784 dated July 12, 2012 (Purchase
Agreement), as amended and supplemented, relating to the purchase and sale of Boeing Model 737 aircraft (Aircraft); and 

WHEREAS, Boeing and Customer agree to incorporate performance guarantees for the Firm 737-*** Aircraft; and 

NOW THEREFORE, in consideration of the mutual covenants contained herein, the parties agree to amend the Purchase Agreement as follows: 

1. Table of Contents, Tables and Letter Agreements: 

1.1 The “Table of Contents” is deleted in its entirety and replaced with the attached “Table of Contents” (identified by “SA-12”). 
 2. Letter Agreement UAL-PA-03784-LA-1601973 entitled “Aircraft Performance Guarantees –
Firm 737-*** Aircraft” (identified by “SA-12”) is added to the Purchase Agreement. 
 3. Miscellaneous: Boeing and Customer
agree that the provisions of Letter Agreement UAL-PA-03784-LA-1601973 will apply to each of the *** model 737-*** Aircraft added under Supplemental Agreement No. 63 and Supplemental Agreement No. 64 of Purchase Agreement 1951 in addition to the
737-*** covered in Purchase Agreement 03784. 

  

					
	UAL-PA-03784	 	 SA-12

BOEING / UNITED AIRLINES PROPRIETARY
	  	Page 1

 Supplemental Agreement No. 12 to 

Purchase Agreement PA-03784 
  

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

  

					
	UAL-PA-03784	 	 SA-12

BOEING / UNITED AIRLINES PROPRIETARY
	  	Page 2

 Supplemental Agreement No. 12 to 

Purchase Agreement PA-03784 
  

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

 

					
	THE BOEING COMPANY	  		 	UNITED AIRLINES, INC.
			
	 /s/    Chastity
Matthews        
	  		 	 /s/    Gerald
Laderman        

	Signature	  		 	Signature
			
	 Chastity Matthews
	  		 	 Gerald Laderman

	Printed Name	  		 	Printed Name
			
	 Attorney-in-Fact
	  		 	 Senior Vice President - Finance and 
acting Chief Financial Officer

	Title	  		 	Title

  

					
	UAL-PA-03784	 	 SA-12

BOEING / UNITED AIRLINES PROPRIETARY
	  	Page 3

 TABLE OF CONTENTS 

 

					
	 	  	 SA NUMBER

	 ARTICLES
	  	
	 Article 1.
	  	Quantity, Model and Description	  	
	 Article 2.
	  	Delivery Schedule	  	
	 Article 3.
	  	Price	  	
	 Article 4.
	  	Payment	  	
	 Article 5.
	  	Additional Terms	  	
		
	 TABLE
	  	
			
	 1A.
	  	Aircraft Information Table – 737-***	  	SA-8
	 1B
	  	Aircraft Information Table - 2016 737-*** Aircraft	  	SA-11
	 1C.
	  	Aircraft Information Table –Firm 737-*** Aircraft	  	SA-10
		
	 EXHIBITS
	  	
			
	 A.
	  	Aircraft Configuration - 737-***	  	
			
	 A1.
	  	Aircraft Configuration – 2016 737-*** Aircraft	  	SA-9
			
	 A2.
	  	Aircraft Configuration – Firm 737-*** Aircraft	  	SA-10
			
	 B.
	  	Aircraft Delivery Requirements and Responsibilities	  	
		
	 SUPPLEMENTAL EXHIBITS
	  	
			
	 AE1.
	  	Escalation Adjustment/Airframe and Optional Features	  	SA-9
			
	 BFE1.
	  	BFE Variables for 737-*** Aircraft	  	SA-1
			
	 BFE2.
	  	BFE Variables for 2016 737-*** Aircraft Incorporated by SA-9	  	SA-9
			
		  	Attachment A1: BFE Variables for the *** 2016 737-*** Aircraft Incorporated by SA-11	  	SA-11
			
	 BFE3.
	  	BFE Variables for Firm 737-*** Aircraft	  	SA-10
			
	 CS1.
	  	Customer Support Variables	  	
			
	 EE1.
	  	Engine Escalation, Engine Warranty and ***	  	
			
	 SLP1.
	  	Service Life Policy Components	  	

  

					
	P.A. 03874	  	 TABLE OF CONTENTS, Page 1 of 4

BOEING / UNITED AIRLINES PROPRIETARY
	  	SA-12

 TABLE OF CONTENTS, CONTINUED 

 

					
	 LETTER AGREEMENTS
	  	 SA
NUMBER

			
	 UAL-PA-03784-LA-1207868
	  	Performance Guarantees	  	
			
	 UAL-PA-03784-LA-1207870
	  	Spare Parts Initial Provisioning	  	
			
	 UAL-PA-03784-LA-1207871
	  	Special Matters	  	
			
	 UAL-PA-03784-LA-1207878
	  	Demonstration Flight Waiver	  	
			
	 UAL-PA-03784-LA-1207879R2
	  	*** Aircraft ***	  	SA-9
			
	 UAL-PA-03784-LA-1207879R4
	  	737-*** Aircraft	  	SA-11
			
	 UAL-PA-03784-LA-1207881
	  	Seller Purchased Equipment 737-***	  	
			
		  	 Attachment AR1 to Letter Agreement UAL-PA-03784-LA-1207881
	  	SA-9
			
	 UAL-PA-03784-LA-1208155R2
	  	*** Matters 737-*** and 2016 737-*** Aircraft	  	SA-9
			
	 UAL-PA-03784-LA-1208156R1
	  	*** for the 737NG Aircraft	  	SA-9
			
		  	 Attachment A: ***
	  	SA-9
			
		  	 Attachment B1: ***
	  	SA-9
			
		  	 Attachment B2: ***
	  	SA-9
			
	 UAL-PA-03784-LA-1208172
	  	***	  	
			
	 UAL-PA-03784-LA-1208173
	  	***	  	SA-1
			
	 UAL-PA-03784-LA-1208169
	  	737 Production Adjustments	  	
			
	 UAL-PA-03784-LA-1208938
	  	Privileged and Confidential Matters	  	
			
	 UAL-PA-03784-LA-1208939
	  	Aircraft Model ***	  	
			
	 UAL-PA-03784-LA-1209115
	  	***	  	
			
	 UAL-PA-03784-LA-1300306
	  	Aircraft Reschedule – ***	  	SA-2
			
	 UAL-PA-03784-LA-1400240
	  	Aircraft Rescheduling of ***	  	SA-5
			
	 UAL-PA-03784-LA-1504843
	  	Open Matters – 2016 737-*** Aircraft	  	SA-9
			
	 UAL-PA-03784-LA-1504844
	  	Special Matters – 2016 737-*** Aircraft	  	SA-9
			
	 UAL-PA-03784-LA-1600041
	  	Special Matters – Firm 737-*** Aircraft	  	SA-10

  

					
	P.A. 03874	  	TABLE OF CONTENTS, Page 2 of 4	  	SA-12
		  	BOEING / UNITED AIRLINES PROPRIETARY	  	

 TABLE OF CONTENTS, CONTINUED 

 

					
	 UAL-PA-03784-LA-1600586
	  	 737-*** Option Aircraft
	  	SA-11
			
	 UAL-PA-03784-LA-1600829
	  	 *** for 2016 737-*** Aircraft
	  	SA-11
			
	 UAL-PA-03784-LA-1601973
	  	 Aircraft Performance Guarantees - Firm 737-*** Aircraft
	  	SA-12

  

					
	P.A. 03874	  	TABLE OF CONTENTS, Page 3 of 4	  	SA-12
		  	BOEING / UNITED AIRLINES PROPRIETARY	  	

 TABLE OF CONTENTS 

 

			
	 SUPPLEMENTAL AGREEMENTS
	  	 DATED AS OF

		
	Supplemental Agreement No. 1	  	September 27, 2012
		
	Supplemental Agreement No. 2	  	March 1, 2013
		
	Supplemental Agreement No. 3	  	June 27, 2013
		
	Supplemental Agreement No. 4	  	September 11, 2013
		
	Supplemental Agreement No. 5	  	March 3, 2014
		
	Supplemental Agreement No. 6	  	June 6, 2014
		
	Supplemental Agreement No. 7	  	May 26, 2015
		
	Supplemental Agreement No. 8	  	June 12, 2015
		
	Supplemental Agreement No. 9	  	January 20, 2016
		
	Supplemental Agreement No. 10	  	February 8, 2016
		
	Supplemental Agreement No. 11	  	March 7, 2016
		
	Supplemental Agreement No. 12	  	June 24, 2016

  

					
	P.A. 03874	  	 TABLE OF CONTENTS, Page 4 of 4

BOEING / UNITED AIRLINES PROPRIETARY
	  	SA-12

			
	

	  	 The Boeing Company
 P.O. Box 3707

Seattle, WA 98124-2207

  
  

UAL-PA-03784-LA-1601973 
 United Airlines, Inc. 

233 South Wacker Drive 
 Chicago, Illinois 60606 

 

			
	Subject:	  	Aircraft Performance Guarantees – Firm 737-*** Aircraft
		
	Reference:	  	Purchase Agreement No. PA-03784 (Purchase Agreement) between The Boeing Company (Boeing) and United Airlines, Inc. (Customer) relating to 737NG (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 performance guarantees in the Attachment. These guarantees are exclusive and expire upon delivery of the Aircraft to Customer. 
  

	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. 

 

	2.	Confidentiality. 

 The information contained herein represents confidential business
information and has value precisely because it is not available generally or to other parties. Customer will limit the disclosure of its contents to employees of Customer with a need to know the contents for purposes of helping Customer 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 Boeing. 

  

					
	 UAL-PA-03784-LA-1601973
 Aircraft Performance
Guarantees – Firm 737-*** Aircraft
	 		  	 SA-12

Page 1

BOEING PROPRIETARY 

 

 
 Very truly yours, 
  

			
	THE BOEING COMPANY
		
	By	 	 /s/ Chastity Matthews

		
	Its	 	 Attorney-In-Fact

	
	ACCEPTED AND AGREED TO this
		
	Date:	 	 June 24, 2016

	
	UNITED AIRLINES, INC. 
		
	By	 	 /s/ Gerald Laderman

		
	Its	 	 Senior Vice President - Finance and

acting Chief Financial Officer

  

					
	 UAL-PA-03784-LA-1601973
 Aircraft Performance
Guarantees – Firm 737-*** Aircraft
	 		  	 SA-12

Page 2

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 1 
  

 MODEL 737-*** WITH WINGLETS PERFORMANCE GUARANTEES 

FOR UNITED AIRLINES, INC. 
  

					
	SECTION	  	CONTENTS	  	 
			
	 1
	  	 AIRCRAFT MODEL APPLICABILITY
	  	
			
	 2
	  	 FLIGHT PERFORMANCE
	  	
			
	 3
	  	 AIRCRAFT CONFIGURATION
	  	
			
	 4
	  	 GUARANTEE CONDITIONS
	  	
			
	 5
	  	 GUARANTEE COMPLIANCE
	  	
			
	 6
	  	 EXCLUSIVE GUARANTEES
	  	

  

					
	 UAL-PA-03784-LA-1601973
 Aircraft Performance
Guarantees – Firm 737-*** Aircraft
	  	 
  
	SA-12
 Page 1
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 2 
  

	1	AIRCRAFT MODEL APPLICABILITY 

 The guarantees contained in this Attachment (the
“Performance Guarantees”) are applicable to the 737-*** Aircraft with winglets and short field performance enhancement option *** and a maximum takeoff weight of *** pounds, a maximum landing weight of *** pounds, and a maximum
zero fuel weight of *** pounds, and equipped with Boeing furnished CFM56-7B*** engines. 
  

	2	FLIGHT PERFORMANCE 

  

	2.1	Mission 

  

	2.1.1	Mission Payload 

 The payload for a stage length of *** nautical miles in still air
(equivalent to a distance of *** nautical miles with a *** knot headwind, representative of a *** route) using the conditions and operating rules defined below, shall not be less than the following guarantee value: 

 

			
	 NOMINAL:
	  	 ***  Pounds

	 TOLERANCE:
	  	 ***  Pounds

	 GUARANTEE:
	  	 ***  Pounds

  

			
	 Conditions and operating rules:
  

	 Stage
 Length:
	  	The stage length is defined as the sum of the distances for climb, cruise, and descent.
		
	Takeoff:	  	The airport altitude is *** feet.
		
		  	The airport temperature is ***°C.
		
		  	The runway length is *** feet.
		
		  	The runway slope is *** percent uphill.
		
		  	The following obstacle definition is based on a straight out departure where obstacle height and distance are specified with reference to the liftoff end of the runway:

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
	  	 SS15-0360
	  	 
  
	SA-12
 Page 2
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 3 
  

							
		  	Distance  	  	Height   	  	
	1.	  	***  feet	  	***  feet	  	
	2.	  	***  feet	  	***  feet	  	
	3.	  	***  feet	  	***  feet	  	

  

			
		  	Takeoff performance is based on an alternate forward center of gravity limit of *** percent of the mean aerodynamic chord.
		
		  	Maximum takeoff thrust is used for the takeoff.
		
		  	The takeoff gross weight shall conform to FAA Regulations.
		
	Climbout Maneuver:	  	Following the takeoff to *** feet, the Aircraft accelerates to the recommended speed of *** KCAS while climbing to *** feet above the departure airport altitude and retracting flaps and landing gear.
		
	Climb:	  	The Aircraft climbs from *** feet above the departure airport altitude to *** feet altitude at the recommended speed of *** KCAS.
		
		  	The Aircraft then accelerates at a rate of climb of *** feet per minute to the recommended climb speed for minimum block fuel.
		
		  	The climb continues at the recommended climb speed for minimum block fuel until *** Mach number is reached.
		
		  	The climb continues at *** Mach number to the initial cruise altitude.
		
		  	The temperature is ***°C during climb.
		
		  	Maximum climb thrust is used during climb.
		
	Cruise:	  	The Aircraft cruises at *** Mach number.
		
		  	The initial cruise altitude is *** feet.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
	  	 SS15-0360
	  	 
  
	SA-12
 Page 3
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 4 
  

			
		
		  	A step climb or multiple step climbs of *** feet altitude may be used when beneficial to minimize fuel burn.
		
		  	The temperature is ***°C during cruise.
		
		  	The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.
		
	Descent:	  	The Aircraft descends from the final cruise altitude at *** Mach number until *** KCAS is reached.
		
		  	The descent continues at *** KCAS to an altitude of *** feet above the destination airport altitude.
		
		  	Throughout the descent, the cabin pressure will be controlled to a maximum rate of descent equivalent to *** feet per minute at sea level.
		
		  	The temperature is ***°C during descent.
		
	Approach and Landing Maneuver:	  	 The Aircraft decelerates to the final approach speed while extending landing gear and flaps, then descends and lands.

 
 The destination airport altitude is *** feet.

		
	Fixed Allowances:	  	For the purpose of this guarantee and for the purpose of establishing compliance with this guarantee, the following shall be used as fixed quantities and allowances:
		
		  	Taxi-Out:
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Takeoff and Climbout Maneuver:
		  	
Fuel          
        ***  Pounds

		  	 Distance           ***  Miles

		  	
Time                ***  
Minutes

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
	  	 SS15-0360
	  	 
  
	SA-12
 Page 4
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 5 
  

			
		
		  	 Approach and Landing Maneuver:

		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	 Taxi-In (shall be consumed from the reserve fuel):

		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	 Usable reserve fuel remaining upon completion of the approach and landing maneuver: ***
Pounds

		
		  	For information purposes, the reserve fuel is either the greater of a minimum *** pounds, or is based on a standard day temperature and a) a contingency fuel allowance equivalent to a continued cruise at the LRC Mach number at
final cruise altitude and weight for a time equal to *** percent of the mission time from takeoff through the completion of the approach and landing maneuver at the destination airport, b) a missed approach and flight to a *** nautical mile
alternate, c) an approach and landing maneuver at the alternate airport, and d) a *** minute hold at *** feet above the alternate airport with an altitude of *** feet.

  

	2.1.2	Mission Payload 

 The payload for a stage length of *** nautical miles in still air
(equivalent to a distance of *** nautical miles with a *** knot headwind, representative of a *** route) using the conditions and operating rules defined below, shall not be less than the following guarantee value: 

 

			
	 NOMINAL:
	  	 ***  Pounds

	 TOLERANCE:
	  	 ***  Pounds

	 GUARANTEE:
	  	 ***  Pounds

  

			
	Conditions and operating rules:

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
	  	 SS15-0360
	  	 
  
	SA-12
 Page 5
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 6 
  

			
		
	Stage Length:	  	The stage length is defined as the sum of the distances for climb, cruise, and descent.
		
	Takeoff:	  	The airport altitude is *** feet.
		
		  	The airport temperature is ***°C.
		
		  	The runway length is *** feet.
		
		  	The stopway is *** feet.
		
		  	The following obstacle definition is based on a straight out departure where obstacle height and distance are specified with reference to the liftoff end of the
runway:

  

							
		  	Distance  	  	Height   	  	
	1.	  	***  feet	  	***  feet	  	
	2.	  	***  feet	  	***  feet	  	
	3.	  	***  feet	  	***  feet	  	
	4.	  	***  feet	  	***  feet	  	

  

			
		  	Takeoff performance is based on an alternate forward center of gravity limit of *** percent of the mean aerodynamic chord.Maximum takeoff thrust is used for the takeoff.
		
		  	The takeoff gross weight shall conform to FAA Regulations.
		
	Climbout Maneuver:	  	Following the takeoff to *** feet, the Aircraft accelerates to the recommended speed of *** KCAS while climbing to *** feet above the departure airport altitude and retracting flaps and landing gear.
		
	Climb:	  	The Aircraft climbs from *** feet above the departure airport altitude to *** feet altitude at the recommended speed of *** KCAS.
		
		  	The Aircraft then accelerates at a rate of climb of *** feet per minute to the recommended climb speed for minimum block fuel.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
	  	 SS15-0360
	  	 
  
	SA-12
 Page 6
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 7 
  

			
		
		  	The climb continues at the recommended climb speed for minimum block fuel until *** Mach number is reached.
		
		  	The climb continues at *** Mach number to the initial cruise altitude.
		
		  	The temperature is ***°C during climb.
		
		  	Maximum climb thrust is used during climb.
		
	Cruise:	  	The Aircraft cruises at *** Mach number.
		
		  	The initial cruise altitude is *** feet.
		
		  	A step climb or multiple step climbs of *** feet altitude may be used when beneficial to minimize fuel burn.
		
		  	The temperature is ***°C during cruise.
		
		  	The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.
		
	Descent:	  	The Aircraft descends from the final cruise altitude at *** KCAS to an altitude of *** feet above the destination airport altitude.
		
		  	Throughout the descent, the cabin pressure will be controlled to a maximum rate of descent equivalent to *** feet per minute at sea level.
		
		  	The temperature is ***°C during descent.
		
	Approach and Landing Maneuver:	  	 The Aircraft decelerates to the final approach speed while extending landing gear and flaps, then descends and lands.

 
 The destination airport altitude is *** feet.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
	  	 SS15-0360
	  	 
  
	SA-12
 Page 7
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 8 
  

			
	 Fixed Allowances:
	  	For the purpose of this guarantee and for the purpose of establishing compliance with this guarantee, the following shall be used as fixed quantities and allowances:
		
		  	Taxi-Out:
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Takeoff and Climbout Maneuver:
		  	
Fuel          
        ***  Pounds

		  	 Distance           ***  Miles

		  	
Time                ***  
Minutes

		
		  	Approach and Landing Maneuver:
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Taxi-In (shall be consumed from the reserve fuel):
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Usable reserve fuel remaining upon completion of the approach and landing maneuver: *** Pounds
		
		  	For information purposes, the reserve fuel is based on a standard day temperature and a) a contingency fuel allowance equivalent to *** minutes of continued cruise starting at the end of the mission cruise and at the LRC Mach
number, b) a missed approach and flight to a *** nautical mile alternate, c) an approach and landing maneuver at the alternate airport, and d) a *** minute hold at *** feet above the destination airport.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
	  	 SS15-0360
	  	 
  
	SA-12
 Page 8
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 9 
  

	2.1.3	Mission Payload 

 The payload for a stage length of *** nautical miles in still air
(equivalent to a distance of *** nautical miles with a *** knot headwind, representative of a Mexico City to Newark route) using the conditions and operating rules defined below, shall not be less than the following guarantee value: 

 

					
	NOMINAL:	  	            ***	 	Pounds
	TOLERANCE:	  	            ***	 	Pounds
	GUARANTEE:	  	            ***	 	Pounds

  

			
	Conditions and operating rules:
		
	Stage Length:	  	The stage length is defined as the sum of the distances for climb, cruise, and descent.
		
	Takeoff:	  	The airport altitude is *** feet.
		
		  	The airport temperature is ***°C.
		
		  	The runway length is *** feet.
		
		  	The runway slope is *** percent downhill.
		
		  	Takeoff performance is based on an alternate forward center of gravity limit of *** percent of the mean aerodynamic chord.
		
		  	Maximum takeoff thrust is used for the takeoff.
		
		  	The takeoff gross weight shall conform to FAA Regulations.
		
	Climbout Maneuver:	  	Following the takeoff to *** feet, the Aircraft accelerates to the recommended speed of *** KCAS while climbing to *** feet above the departure airport altitude and retracting flaps and landing gear.
		
	Climb:	  	The Aircraft climbs from *** feet above the departure airport altitude to *** feet altitude at the recommended speed of *** KCAS.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
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 Page 9
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 10 
  

			
		
		  	The Aircraft then accelerates at a rate of climb of *** feet per minute to the recommended climb speed for minimum block fuel.
		
		  	The climb continues at the recommended climb speed for minimum block fuel until *** Mach number is reached.
		
		  	The climb continues at *** Mach number to the initial cruise altitude.
		
		  	The temperature is ***°C during climb.
		
		  	Maximum climb thrust is used during climb.
		
	Cruise:	  	The Aircraft cruises at *** Mach number.
		
		  	The initial cruise altitude is *** feet.
		
		  	A step climb or multiple step climbs of *** feet altitude may be used when beneficial to minimize fuel burn.
		
		  	The temperature is ***°C during cruise.
		
		  	The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.
		
	Descent:	  	The Aircraft descends from the final cruise altitude at *** KCAS to an altitude of *** feet above the destination airport altitude.
		
		  	Throughout the descent, the cabin pressure will be controlled to a maximum rate of descent equivalent to *** feet per minute at sea level.
		
		  	The temperature is ***°C during descent.
		
	Approach and Landing Maneuver:	  	 The Aircraft decelerates to the final approach speed while extending landing gear and flaps, then descends and lands.

 
 The destination airport altitude is *** feet.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
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	SA-12
 Page 10
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 11 
  

 
			
	Fixed Allowances:	  	For the purpose of this guarantee and for the purpose of establishing compliance with this guarantee, the following shall be used as fixed quantities and allowances:
		
		  	Taxi-Out:
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Takeoff and Climbout Maneuver:
		  	
Fuel          
        ***  Pounds

		  	 Distance           ***  Miles

		  	
Time                ***  
Minutes

		
		  	Approach and Landing Maneuver:
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Taxi-In (shall be consumed from the reserve fuel):
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Usable reserve fuel remaining upon completion of the approach and landing maneuver: *** Pounds
		
		  	For information purposes, the reserve fuel is either the greater of a minimum *** pounds, or is based on a standard day temperature and a) a contingency fuel allowance equivalent to a continued cruise at the LRC Mach number at final
cruise altitude and weight for a time equal to *** percent of the mission time from takeoff through the completion of the approach and landing maneuver at the destination airport, b) a missed approach and flight to a *** nautical mile alternate, c)
an approach and landing maneuver at the alternate airport, and d) a *** minute hold at *** feet above the alternate airport with an altitude of *** feet.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
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 Page 11
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 12 
  

	2.1.4	Mission Payload 

 The payload for a stage length of *** nautical miles in still air
(equivalent to a distance of *** nautical miles with a *** knot headwind, representative of a *** route) using the conditions and operating rules defined below, shall not be less than the following guarantee value: 

 

					
	NOMINAL:	  	            ***	 	Pounds
	TOLERANCE:	  	            ***	 	Pounds
	GUARANTEE:	  	            ***	 	Pounds

  

			
	Conditions and operating rules:
		
	Stage Length:	  	The stage length is defined as the sum of the distances for climb, cruise, and descent.
		
	Takeoff:	  	The airport altitude is *** feet.
		
		  	The airport temperature is ***°C.
		
		  	The runway length is *** feet.
		
		  	The runway slope is *** percent downhill.
		
		  	The following obstacle definition is based on a straight out departure where obstacle height and distance are specified with reference to the liftoff end of the runway:
		
		  	                                 Distance    
                 Height
		  	          1.             *** feet              *** feet
		  	          2.             *** feet              *** feet
		
		  	Takeoff performance is based on an alternate forward center of gravity limit of *** percent of the mean aerodynamic chord.
		
		  	Maximum takeoff thrust is used for the takeoff.
		
		  	The takeoff gross weight shall conform to FAA Regulations.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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Performance Guarantees – Firm 737-*** Aircraft
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	SA-12
 Page 12
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 13 
  

			
		
	Climbout Maneuver:	  	Following the takeoff to *** feet, the Aircraft accelerates to the recommended speed of *** KCAS while climbing to *** feet above the departure airport altitude and retracting flaps and landing gear.
		
	Climb:	  	The Aircraft climbs from *** feet above the departure airport altitude to *** feet altitude at the recommended speed of *** KCAS.
		
		  	The Aircraft then accelerates at a rate of climb of *** feet per minute to the recommended climb speed for minimum block fuel.
		
		  	The climb continues at the recommended climb speed for minimum block fuel until *** Mach number is reached.
		
		  	The climb continues at *** Mach number to the initial cruise altitude.
		
		  	The temperature is ***°C during climb.
		
		  	Maximum climb thrust is used during climb.
		
	Cruise:	  	The Aircraft cruises at *** Mach number.
		
		  	The initial cruise altitude is *** feet.
		
		  	A step climb or multiple step climbs of *** feet altitude may be used when beneficial to minimize fuel burn.
		
		  	The temperature is ***°C during cruise.
		
		  	The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.
		
	Descent:	  	The Aircraft descends from the final cruise altitude at *** KCAS to an altitude of *** feet above the destination airport altitude.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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Performance Guarantees – Firm 737-*** Aircraft
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	SA-12
 Page 13
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 14 
  

 
			
		
		  	Throughout the descent, the cabin pressure will be controlled to a maximum rate of descent equivalent to *** feet per minute at sea level.
		
		  	The temperature is ***°C during descent.
		
	Approach and Landing Maneuver:	  	 The Aircraft decelerates to the final approach speed while extending landing gear and flaps, then descends and lands.

 
 The destination airport altitude is *** feet.

		
	Fixed Allowances:	  	For the purpose of this guarantee and for the purpose of establishing compliance with this guarantee, the following shall be used as fixed quantities and allowances:
		
		  	Taxi-Out:
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Takeoff and Climbout Maneuver:
		  	
Fuel          
        ***  Pounds

		  	 Distance           ***  Miles

		  	
Time                ***  
Minutes

		
		  	Approach and Landing Maneuver:
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Taxi-In (shall be consumed from the reserve fuel):
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Usable reserve fuel remaining upon completion of the approach and landing maneuver: *** Pounds

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
	  	 SS15-0360
	  	 
  
	SA-12
 Page 14
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 15 
  

			
		
		  	For information purposes, the reserve fuel is based on a standard day temperature and a) a contingency fuel allowance equivalent to *** minutes of continued cruise starting at the end of the mission cruise and at the LRC Mach
number, b) a missed approach and flight to a *** nautical mile alternate, c) an approach and landing maneuver at the alternate airport, and d) a *** minute hold at *** feet above the destination airport.

  

	2.1.5	Mission Block Fuel 

 The block fuel for a stage length of *** nautical miles in still air
with a *** pound payload using the conditions and operating rules defined below, shall not be more than the following guarantee value: 
  

					
	NOMINAL:	  	            ***	 	Pounds
	TOLERANCE:	  	            ***	 	Pounds
	GUARANTEE:	  	            ***	 	Pounds

  

			
	Conditions and operating rules:
		
	Stage Length:	  	The stage length is defined as the sum of the distances for climb, cruise, and descent.
		
	Block Fuel:	  	The block fuel is defined as the sum of the fuel used for taxi-out, takeoff and climbout maneuver, climb, cruise, descent, approach and landing maneuver, and taxi-in.
		
	Takeoff:	  	The airport altitude is sea level.
		
		  	The takeoff gross weight is not limited by the airport conditions.
		
		  	Takeoff performance is based on an alternate forward center of gravity limit of *** percent of the mean aerodynamic chord.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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Performance Guarantees – Firm 737-*** Aircraft
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	  	 SS15-0360
	  	 
  
	SA-12
 Page 15
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 16 
  

 
			
		
		  	Maximum takeoff thrust is used for the takeoff.
		
		  	The takeoff gross weight shall conform to FAA Regulations.
		
	Climbout Maneuver:	  	Following the takeoff to *** feet, the Aircraft accelerates to the recommended speed of *** KCAS while climbing to *** feet above the departure airport altitude and retracting flaps and landing gear.
		
	Climb:	  	The Aircraft climbs from *** feet above the departure airport altitude to *** feet altitude at the recommended speed of *** KCAS.
		
		  	The Aircraft then accelerates at a rate of climb of *** feet per minute to the recommended climb speed for minimum block fuel.
		
		  	The climb continues at the recommended climb speed for minimum block fuel until *** Mach number is reached.
		
		  	The climb continues at *** Mach number to the initial cruise altitude.
		
		  	The temperature is ***°C during climb.
		
		  	Maximum climb thrust is used during climb.
		
	Cruise:	  	The Aircraft cruises at *** Mach number.
		
		  	The initial cruise altitude is *** feet.
		
		  	A step climb or multiple step climbs of *** feet altitude may be used when beneficial to minimize fuel burn.
		
		  	The temperature is ***°C during cruise.
		
		  	The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

  

							
	 Attachment to UAL-PA-03784-LA-1601973
 Aircraft
Performance Guarantees – Firm 737-*** Aircraft
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	  	 SS15-0360
	  	 
  
	SA-12
 Page 16
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 17 
  

			
		
	Descent:	  	The Aircraft descends from the final cruise altitude at *** Mach number until *** KCAS is reached.
		
		  	The descent continues at *** KCAS to an altitude of *** feet above the destination airport altitude.
		
		  	Throughout the descent, the cabin pressure is controlled to a maximum rate of descent equivalent to *** feet per minute at sea level.
		
		  	The temperature is ***°C during descent.
		
	Approach and Landing Maneuver:	  	 The Aircraft decelerates to the final approach speed while extending landing gear and flaps, then descends and lands.

 
 The destination is a sea level airport.

		
	Fixed Allowances:	  	For the purpose of this guarantee and for the purpose of establishing compliance with this guarantee, the following shall be used as fixed quantities and allowances:
		
		  	Taxi-Out:
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Takeoff and Climbout Maneuver:
		  	
Fuel          
        ***  Pounds

		  	 Distance           ***  Miles

		  	
Time                ***  
Minutes

		
		  	Approach and Landing Maneuver:
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

		
		  	Taxi-In (shall be consumed from the reserve fuel):
		  	
Fuel          
        ***  Pounds

		  	
Time                ***  
Minutes

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
	  	 SS15-0360
	  	 
  
	SA-12
 Page 17
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 18 
  

			
		
	      
	  	 Usable reserve fuel remaining upon completion of the approach and landing maneuver: ***
Pounds

		
		  	For information purposes, the reserve fuel is based on a standard day temperature and a) a contingency fuel allowance equivalent to *** minutes of continued cruise starting at the end of the mission cruise and at the LRC Mach
number, b) a missed approach and flight to a *** nautical mile alternate, c) an approach and landing maneuver at the alternate airport, and d) a *** minute hold at *** feet above the destination airport.

  

	2.1.6	Operational Empty Weight Basis 

 The Operational Empty Weight (OEW) derived in Paragraph
2.1.7 is the basis for the mission guarantees of Paragraphs 2.1.1, 2.1.2, 2.1.3, 2.1.4, and 2.1.5. 

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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Performance Guarantees – Firm 737-*** Aircraft
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	  	 SS15-0360
	  	 
  
	SA-12
 Page 18
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 19 
  

	2.1.7	737-*** Weight Summary - United Airlines 

  

					
	 	  	Pounds	 
		
	 Standard Model Specification MEW
	  	 	***	  
		
	 Configuration Specification ***
	  			
	 *** Tourist Class Passengers
	  			
	 *** Engines
	  			
	 *** lb (*** kg) Maximum Taxi Weight
	  			
	 *** U.S. Gallons (*** Liters) Fuel Capacity
	  			
		
	 ***
	  			
	 ***
	  	 	***	  
	 ***
	  			
	 ***
	  	 	***	  
	 ***
	  	 	***	  
	 ***
	  	 	***	  
	 ***
	  	 	***	  
	 ***
	  	 	***	  
	 ***
	  	 	***	  
	 ***
	  	 	***	  
	 ***
	  	 	***	  
	 ***
	  	 	***	  
	 ***
	  	 	***	  
		
	 United Airlines Manufacturer’s Empty Weight (MEW)
	  	 	***	  
		
	 Standard and Operational Items Allowance (Paragraph 2.1.8)
	  	 	***	  
		
	 United Airlines Operational Empty Weight (OEW)
	  	 	***	  

  

													
	 	  	Quantity	 	  	Pounds	 	  	Pounds	 
				
	 ***
	  				  				  	 	***	  
				
	 ***
	  	 	***	  	  	 	***	  	  			

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 20 
  

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

  

	2.1.8	Standard and Operational Items Allowance 

  

																	
	 	  	Qty	 	  	Pounds	 	  	Pounds	 	  	Pounds	 
					
	 Standard Items Allowance
	  				  				  				  	 	***	  
					
	 Unusable Fuel
	  				  				  	 	***	  	  			
	 Oil
	  				  				  	 	***	  	  			
	 Oxygen Equipment
	  				  				  	 	***	  	  			
	 Miscellaneous Equipment
	  				  				  	 	***	  	  			
	 Galley Structure & Fixed Inserts
	  				  				  	 	***	  	  			
					
	 Operational Items Allowance
	  				  				  				  	 	***	  
					
	 Crew and Crew Baggage
	  				  				  	 	***	  	  			
	 Flight Crew
	  	 	***	  	  	 	***	  	  				  			
	 Cabin Crew
	  	 	***	  	  	 	***	  	  				  			
	 Crew Baggage
	  	 	***	  	  	 	***	  	  				  			
	 Catering Allowance & Removable Inserts
	  				  				  	 	***	  	  			
	 First Class
	  	 	***	  	  	 	***	  	  				  			
	 Premium Economy Class
	  	 	***	  	  	 	***	  	  				  			
	 Economy Class
	  	 	***	  	  	 	***	  	  				  			
	 Passenger Service Equipment
	  	 	***	  	  				  	 	***	  	  			
	 Potable Water - *** USG
	  				  				  	 	***	  	  			
	 Waste Tank Disinfectant
	  				  				  	 	***	  	  			
	 Emergency Equipment (Incl. Life Vests & Life Rafts/ELT)
	  				  				  	 	***	  	  			
					
	 Total Standard and Operational Items Allowance
	  				  				  				  	 	***	  

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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 Page 20
	  
   

BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 21 
  

	3	AIRCRAFT CONFIGURATION 

  

	3.1	The guarantees contained in this Attachment are based on the Aircraft configuration as defined in *** plus any changes mutually agreed upon or otherwise allowed by the Purchase Agreement to be incorporated into the
Customer’s Detail Specification (herein referred to as the Detail Specification). Appropriate adjustment shall be made for changes in such Detail Specification approved by the Customer and Boeing or otherwise allowed by the Purchase Agreement
which cause changes to the flight performance and/or weight and balance of the Aircraft. Such adjustment shall be accounted for by Boeing in its evidence of compliance with the guarantees. 

 

	3.2	The guarantee payloads of Paragraph 2.1.1, 2.1.2, 2.1.3, and 2.1.4 and the specified payload of the Paragraph 2.1.5 block fuel guarantee will be adjusted by Boeing for the effect of the following on OEW in its evidence
of compliance with the guarantees: 

 (1) Changes to the Detail Specification or any other changes mutually agreed upon between
the Customer and Boeing or otherwise allowed by the Purchase Agreement. 
 (2) The difference between the component weight allowances given
in Appendix E of the Detail Specification and the actual weights. 
  

	4	GUARANTEE CONDITIONS 

  

	4.1	All guaranteed performance data are based on the International Standard Atmosphere (ISA) and specified variations therefrom; altitudes are pressure altitudes. 

 

	4.2	The Federal Aviation Administration (FAA) regulations referred to in this Attachment are, unless otherwise specified, the 737-*** Certification Basis regulations specified in the Type Certificate Data ***.

  

	4.3	 In the event a change is made to any law, governmental regulation or requirement, or in the interpretation
of any such law, governmental regulation or requirement that affects the certification basis for the Aircraft as described in Paragraph 4.2, and as a result thereof, a change is made to the configuration and/or the performance of the Aircraft in
order to obtain certification, the 

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 22 
  

	 	
guarantees set forth in this Attachment shall be appropriately modified to reflect any such change. 

  

	4.4	The takeoff portion of the mission guarantees are based on hard surface, level and dry runways with no wind or obstacles, no clearway or stopway, *** mph tires, with Category *** brakes and anti-skid operative,
*** minute takeoff thrust, and with the Aircraft center of gravity at the most forward limit unless otherwise specified. The takeoff performance is based on no engine bleed for air conditioning or thermal anti-icing and the Auxiliary Power Unit
(APU) turned off unless otherwise specified. Unbalanced field length calculations and the improved climb performance procedure will be used for takeoff as required. 

 

	4.5	The climb, cruise and descent portions of the mission guarantees include allowances for normal power extraction and engine bleed for normal operation of the air conditioning system. Normal electrical power
extraction shall be defined as not less than a *** kilowatts total electrical load. Normal operation of the air conditioning system shall be defined as pack switches in the “Auto” position, the temperature control switches in the
“Auto” position that results in a nominal cabin temperature of ***°F, and all air conditioning systems operating normally. This operation allows a maximum cabin pressure differential of *** pounds per square inch at higher altitudes,
with a nominal Aircraft cabin ventilation rate of *** cubic feet per minute including passenger cabin recirculation (nominal recirculation is *** percent). The APU is turned off unless otherwise specified. 

 

	4.6	The climb, cruise and descent portions of the mission guarantees are based on an Aircraft center of gravity location of *** percent of the mean aerodynamic chord. 

 

	4.7	Performance, where applicable, is based on a fuel Lower Heating Value (LHV) of *** BTU per pound and a fuel density of *** pounds per U.S. gallon. 

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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BOEING PROPRIETARY 

 Attachment to Letter Agreement 

No. UAL-PA-03784-LA-1601973 
 CFM56-7B*** Engines 

Page 23 
  

	5	GUARANTEE COMPLIANCE 

  

	5.1	Compliance with the guarantees of Section 2 shall be based on the conditions specified in those sections, the Aircraft configuration of Section 3 and the guarantee conditions of Section 4. 

 

	5.2	Compliance with the takeoff portion of the mission guarantee shall be based on the FAA approved Airplane Flight Manual for the Model 737-***. 

 

	5.3	Compliance with the climb, cruise and descent portions of the mission guarantees shall be established by calculations based on flight test data obtained from an aircraft in a configuration similar to that defined
by the Detail Specification. 

  

	5.4	The OEW used for compliance with the mission guarantees shall be the actual MEW plus the Standard and Operational Items Allowance in Appendix E of the Detail Specification. 

 

	5.5	The data derived from tests shall be adjusted as required by conventional methods of correction, interpolation or extrapolation in accordance with established engineering practices to show compliance with these
guarantees. 

  

	5.6	Compliance shall be based on the performance of the airframe and engines in combination, and shall not be contingent on the engine meeting its manufacturer’s performance specification. 

 

	6	EXCLUSIVE GUARANTEES 

 The only performance guarantees applicable to the Aircraft are
those set forth in this Attachment. 

  

							
	 Attachment to UAL-PA-03784-LA-1601973
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Performance Guarantees – Firm 737-*** Aircraft
 AERO-B-BBA4-M15-0858
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 Page 23
	  
   

BOEING PROPRIETARY

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