Document:

Letter Agreement No. 6-1162-ELP-0794

 Exhibit 10.21 

6-1162-ELP-0794 
 United Air Lines, Inc.

 P. O. Box 66100 
 Chicago, IL
60601-0100 
  

			
	Subject:	  	[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Program 
		
	Reference:	  	Purchase Agreement No. 3427 (Purchase Agreement) between The Boeing Company (Boeing) and United Air Lines, Inc. (Customer) relating to Model 787-8 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. 
 In consideration of Customer executing
the Purchase Agreement and fully performing obligations under such Purchase Agreement including taking delivery of no less than twenty-five (25) Boeing model 787 aircraft, Boeing agrees to provide the special considerations set forth below for
Customer’s [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]. 

1. [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] 

2. Administration of the [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]

 2.1 Annual Confirmation. Customer shall annually confirms in writing that the [CONFIDENTIAL MATERIAL OMITTED AND FILED
SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] 
 2.2. Annual Review. [CONFIDENTIAL
MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] 

 3. Documentation [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST
FOR CONFIDENTIAL TREATMENT] 
 4. [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT] 

 5. 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 can only be assigned, in whole or in part, pursuant to Article 9 of the AGTA as amended by Letter Agreement No. 6-1162-IRS-0184. 

6. Confidential Treatment. 

Customer and Boeing understand that certain commercial and financial information contained in this Letter Agreement are considered by
Boeing and Customer as confidential and are subject to the terms and conditions set forth in Letter Agreement No. 6-1162-IRS-0182. 

			
	Very truly yours,
	
	THE BOEING COMPANY
		
	By	 	 /s/ Nobuko Wiles

		
	Its	 	 Attorney-In-Fact

	
	ACCEPTED AND AGREED TO this
	
	Date: February 19, 2010
	
	UNITED AIR LINES, INC.

			
		
	By	 	 /s/ Kathryn A. Mikells

		
	Its	 	
Executive Vice President and Chief Financial Officer

Attachment 

 United Air Lines, Inc. 

Attachment A to 6-1162-ELP-0794 

[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC 

PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]Letter Agreement No. 6-1162-ELP-0795

 Exhibit 10.22 

6-1162-ELP-0795 
 United Air Lines, Inc.

 P. O. Box 66100 
 Chicago, IL 60601

  

			
	Subject:	  	[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Program
		
	Reference:	  	Purchase Agreement No. 3427 (Purchase Agreement) between The Boeing Company (Boeing) and United Air Lines, Inc. (Customer) relating to Model 787-8 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. 
 In consideration of Customer executing
the Purchase Agreement and fully performing obligations under such Purchase Agreement including taking delivery of no less than twenty-five (25) Boeing model 787 aircraft, Boeing agrees to provide the special considerations set forth below for
Customer’s [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]. 
 1.
[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]. 

1.2 Documentation. [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT] 
 2. Administration of the [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A
REQUEST FOR CONFIDENTIAL TREATMENT] 
 2.1 Annual Confirmation. Customer shall annually confirms in writing that the
[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]. 
  

 P.A. No. 3427 

[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Program 

BOEING / UNITED PROPRIETARY 

 United Air Lines, Inc. 

6-1162-ELP-0795 
  Page
 2
 
  

 2.2 Annual Review. [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH
THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]. 
 3 [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT
TO A REQUEST FOR CONFIDENTIAL TREATMENT] 
 4. [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT] 
 5. 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 can only be assigned, in whole or in part, pursuant to Article 9 of the AGTA as amended by Letter Agreement No. 6-1162-IRS-0184. 
 6.
Confidential Treatment. 
 Customer and Boeing understand that certain commercial and financial information contained in
this Letter Agreement are considered by Boeing and Customer as confidential and are subject to the terms and conditions set forth in Letter Agreement No. 6-1162-IRS-0182. 

 

 P.A. No. 3427 

[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Program 

BOEING / UNITED PROPRIETARY 

 United Air Lines, Inc. 

6-1162-ELP-0795 
  Page
 3
 
  

			
	Very truly yours,
	
	THE BOEING COMPANY
		
	By	 	 /s/ Nobuko Wiles

		
	Its	 	 Attorney-In-Fact

	
	ACCEPTED AND AGREED TO this
	
	Date: February 19, 2010
	
	UNITED AIR LINES, INC.

			
		
	By	 	 /s/ Kathryn A. Mikells

		
	Its	 	
Executive Vice President and Chief Financial Officer

Attachment 
  

 P.A. No. 3427 

[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Program 

BOEING / UNITED PROPRIETARY 

 United Air Lines, Inc. 

Attachment A to 6-1162-ELP-0795 
  

 [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC 

PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] 

 

 P.A. No. 3427 

[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Program 

BOEING / UNITED PROPRIETARYLetter Agreement No. 6-1162-ELP-0182

 Exhibit 10.23 

6-1162-IRS-0182 
 United Air Lines, Inc.

 P. O. Box 66100 
 Chicago, IL 60601

  

			
	Subject:	  	Priviledged and Confidential Matters
		
	Reference:	  	Purchase Agreement No. 3427 (Purchase Agreement) between The Boeing Company (Boeing) and United Air Lines, Inc. (Customer) relating to Model 787-8 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. 
 Boeing and Customer agree that certain
commercial and financial information contained in or transmitted pursuant to the Purchase Agreement and the Aircraft General Terms Agreement (AGTA) (together the “Purchase Agreement”) between Boeing and Customer and all letter agreements
made a part of the Purchase Agreement, including exhibits or attachments thereto are considered by Boeing and Customer as privileged and confidential and the parties agree that the information contained therein or transmitted pursuant to
(Information) represents confidential business information. Except as specified below, each of Boeing and Customer is prohibited from disclosing the Information to any person, entity, or government agency. Each party shall protect the
confidentiality of such Information in the manner similar to how a party protects its own Information of a similar nature, but with no less than a reasonable standard of care. This provision shall not restrict a party from taking any steps necessary
to protect and safeguard its interests relating to the Information, including obtaining a protective order or other injunctive relief, where appropriate. 
  

	 	(a)	Employees. A party may disclose the Information to its own employees who (i) have a need to know the Information for purposes of assisting said party in the
evaluation or administration of the Purchase Agreement or such party’s business operations and (ii) have been instructed to not disclose the Information except as provided by this Letter Agreement. 

 

	 	(b)	 Professional Advisors. A party may disclose the Information to its auditors, insurers, financial advisors, consultants and attorneys
(“Professional Advisors”) who have a need to know the 

  

 P.A. No. 3427 

Priviledged and Confidential Matters 

BOEING / UNITED PROPRIETARY 

 United Air Lines, Inc. 

6-1162-IRS-0182 
  

	 	
Information in connection with providing services to said party only when said party has first obtained from the Professional Advisor a written obligation of confidentiality and restricted use
that is no less restrictive than the terms of this Letter Agreement. Each party shall be fully responsible to the other party for the Professional Advisors’ compliance with such obligations. 

 

	 	(c)	Regulatory Requirements. A party may disclose in a regulatory or other government filing that part of the Information which is required by applicable law or
regulation to be disclosed in such regulatory or other governmental filings, including filings with the Securities and Exchange Commission (“SEC”), but only in accordance with the following requirements: 

 

	 	(i)	The disclosing party shall advise the other party in writing of such disclosure requirement prior to making such disclosure to enable the other party to take those
steps it deems necessary to protect the Information; and 

  

	 	(ii)	The disclosing party shall, as requested by the other party, seek redaction and/or confidential treatment for the Information or parts thereof from the SEC or other
applicable regulators. 

  

 P.A. No. 3427 

Priviledged and Confidential Matters 

BOEING / UNITED PROPRIETARY 

 United Air Lines, Inc. 

6-1162-IRS-0182 
  

			
	Very truly yours,
	
	THE BOEING COMPANY
		
	By	 	 /s/ Nobuko Wiles

		
	Its	 	 Attorney-In-Fact

	
	ACCEPTED AND AGREED TO this
	
	Date: February 19, 2010
	
	UNITED AIR LINES, INC.

			
		
	By	 	 /s/ Kathryn A. Mikells

		
	Its	 	
Executive Vice President and Chief Financial Officer

 

 P.A. No. 3427 

Priviledged and Confidential Matters 

BOEING / UNITED PROPRIETARY

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