Document:

Deposit Agreement, dated as of October 13, 2009

 Exhibit 4.10 
  
  
  
  
  
 DEPOSIT AGREEMENT 
 (CLASS A) 
 dated as of October 13, 2009 
 between 
 WILMINGTON TRUST COMPANY 
 as Escrow Agent 
 and 
 JPMORGAN CHASE BANK, N.A. 
 as Depositary 
  
  
  
  

 DEPOSIT AGREEMENT (Class A) dated as of October 13, 2009 (as amended, modified
or supplemented from time to time, this “Agreement”) between WILMINGTON TRUST COMPANY, a Delaware banking corporation, as Escrow Agent under the Escrow and Paying Agent Agreement referred to below (in such capacity, together
with its successors in such capacity, the “Escrow Agent”), and JPMORGAN CHASE BANK, N.A., , as depositary bank hereunder (the “Depositary”). 
 W I T N E S S E T H: 
 WHEREAS, United Air Lines, Inc. (“United”) and Wilmington Trust Company, not in its individual capacity except as otherwise expressly provided therein, but solely as trustee (in
such capacity, together with its successors in such capacity, the “Pass Through Trustee”) have entered into a Trust Supplement, dated as of October 13, 2009, the “Trust Supplement”) Pass Through Trust Agreement
dated as of June 26, 2007 (as amended, modified or supplemented from time to time in accordance with the terms thereof, the “Pass Through Trust Agreement”) relating to United Air Lines Pass Through Trust 2009-1A-O pursuant to
which the United Air Lines Pass Through Trust, Series 2009-1A-O Certificates referred to therein (the “Certificates”) are being issued (the date of such issuance, the “Issuance Date”); 
 WHEREAS, United and Morgan Stanley & Co., Incorporated and J.P. Morgan Securities Inc. (collectively, the
“Underwriters” and, together with their respective transferees and assigns as registered owners of the Certificates, the “Investors”) have entered into an Underwriting Agreement dated October 5, 2009 pursuant
to which the Pass Through Trustee will issue and sell the Certificates to the Underwriters (the net proceeds of such sale being herein referred to as the “Net Proceeds”); 
 WHEREAS, United, the Pass Through Trustee and certain other persons concurrently herewith are entering into the Note Purchase
Agreement, dated as of the date hereof (the “Note Purchase Agreement”), pursuant to which the Pass Through Trustee has agreed to acquire from time to time on or prior to the Deposit Period Termination Date (as defined in the Note
Purchase Agreement) equipment notes (the “Equipment Notes”) issued to finance certain aircraft currently owned by United utilizing a portion of the Net Proceeds; 
 WHEREAS, the Escrow Agent, the Underwriters, the Pass Through Trustee and Wilmington Trust Company, as paying agent for the Escrow
Agent (in such capacity, together with its successors in such capacity, the “Paying Agent”) concurrently herewith are entering into an Escrow and Paying Agent Agreement (Class A), dated as of the date hereof (as amended,
modified or supplemented from time to time in accordance with the terms thereof, the “Escrow and Paying Agent Agreement”); and 
 WHEREAS, the Underwriters and the Pass Through Trustee intend that the Net Proceeds be held in escrow by the Escrow Agent on behalf of the Investors pursuant to the Escrow and Paying Agent
Agreement, subject to withdrawal upon request of and proper certification by the Pass Through Trustee for the purpose of purchasing Equipment Notes, and that pending such withdrawal the Net Proceeds be deposited by the Escrow Agent with the
Depositary pursuant to this Agreement, which provides for the Depositary to pay interest on the Deposits and to establish accounts from which the Escrow Agent shall make withdrawals upon request of and proper certification by the Pass Through
Trustee. 

 [Deposit Agreement (Class A)] 
  

 NOW, THEREFORE, in consideration of the obligations contained herein, and for
other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereto hereby agree as follows: 
 Section 1.1    Acceptance of Depositary. The Depositary hereby agrees to act as depositary bank as provided herein and in connection therewith to accept all amounts to be
delivered to or held by the Depositary pursuant to the terms of this Agreement. The Escrow Agent shall not have any right to withdraw, assign or otherwise transfer moneys held in the Accounts except as permitted by this Agreement. 
 Section 1.2    Establishment of Accounts. The Escrow Agent hereby instructs the Depositary, and the
Depositary agrees, to establish the separate deposit accounts listed on Schedule I hereto and to establish such additional separate deposit accounts as may be required in connection with the deposits contemplated by Section 2.4 hereof
(each, an “Account” and collectively, the “Accounts”), each in the name of the Escrow Agent and all on the terms and conditions set forth in this Agreement. It is the express intention of the parties hereto that all
amounts on deposit hereunder be deemed to be general deposits, not special deposits, and that such deposits create a customer and bank relationship between the Escrow Agent and Depository. 
 Section 2.1    Deposits. The Escrow Agent shall direct the Underwriters to deposit with the Depositary on
the date of this Agreement (the “Deposit Date”) in Federal (same day) funds by wire transfer to the account of JPMorgan Chase Bank, N.A., ABA: 021000021, Account Number: 9009000150, Account Name: PTFS, Account Number: E01029 for
further credit to Wilmington Trust Company, ref: United EETC 2009-1A-O, and the Depositary shall accept from the Underwriters, on behalf of the Escrow Agent, the sum of US$659,107,000. Upon acceptance of such sum, the Depositary shall
(i) establish each of the deposits specified in Schedule I hereto maturing on January 26, 2010 (including any deposit made pursuant to Section 2.4 hereof, individually, a “Deposit” and, collectively, the
“Deposits”) and (ii) credit each Deposit to the related Account as set forth therein. No amount shall be deposited in any Account other than the related Deposit. 
 Section 2.2    Interest. Each Deposit shall bear interest from and including the date of deposit to but
excluding the date of withdrawal at the rate of 10.40% per annum (computed on the basis of a year of twelve 30 day months) payable to the Paying Agent on behalf of the Escrow Agent in arrears on May 1, 2010 and on the date of the Final
Withdrawal (as defined below), if any, or the date of the Replacement Withdrawal (as defined below), as applicable, all in accordance with the terms of this Agreement. Interest accrued on any Deposit that is withdrawn pursuant to a Notice of
Financing Withdrawal (as defined below) shall be paid on May 1, 2010, notwithstanding any intervening Final Withdrawal (as defined below). 
 Section 2.3    Withdrawals. (a) On and after the date seven days after the establishment of any Deposit, the Escrow Agent may, by providing at least two Business
Days’ prior notice of withdrawal to the Depositary in the form of Exhibit A hereto (a “Notice of Financing Withdrawal”), withdraw not less than the entire

  

 2 

 [Deposit Agreement (Class A)] 
  

 
balance of such Deposit, except that at any time prior to the actual withdrawal of such Deposit, the Escrow Agent may, by notice to the Depositary, which notice has been actually received by the
Depositary prior to such actual withdrawal, cancel such withdrawal (including on the scheduled date therefor), and thereafter such Deposit shall continue to be maintained by the Depositary in accordance with the original terms thereof. Following
such withdrawal the balance in the related Account shall be zero and the Depositary shall close such Account. As used in this Agreement, “Business Day” means any day, other than a Saturday, Sunday or other day on which commercial
banks are authorized or required by law to close in New York, New York, Chicago, Illinois or Wilmington, Delaware. The Depositary may waive the foregoing requirement that any Deposit can only be withdrawn on or after seven days after the
establishment thereof, and may instead reserve the right, upon at least 14 days’ prior written notice to United, the Escrow Agent and the Pass Through Trustee, to require seven days’ notice for any withdrawal 
 (b)    (i) The Escrow Agent may, by providing at least 15 days’ prior notice of withdrawal to the Depositary in
the form of Exhibit B hereto (a “Notice of Final Withdrawal”), withdraw the entire amount of all of the remaining Deposits together with the payment by the Depositary of all accrued and unpaid interest on such Deposits to but
excluding the specified date of withdrawal (a “Final Withdrawal”), on such date as shall be specified in such Notice of Final Withdrawal. If a Notice of Final Withdrawal has not been given to the Depositary on or before
January 11, 2010 and there are unwithdrawn Deposits on such date, the Depositary shall pay the amount of the Final Withdrawal to the Paying Agent on January 26, 2010. 
 (ii)    The Escrow Agent may, by providing at least five Business Days prior notice of withdrawal to
the Depositary in the form of Exhibit C hereto (a “Notice of Replacement Withdrawal”), withdraw the entire amount of all Deposits then held by the Depositary together with all accrued and unpaid interest on such Deposits
(including Deposits previously withdrawn pursuant to a Notice of Financing Withdrawal) to but excluding the specified date of withdrawal (a “Replacement Withdrawal”), on such date as shall be specified in such Notice of Replacement
Withdrawal. 
 (c)    If the Depositary receives a duly completed Notice of Financing Withdrawal or Notice
of Final Withdrawal or Notice of Replacement Withdrawal (each, a “Withdrawal Notice”) complying with the provisions of this Agreement, it shall make the payments specified therein in accordance with the provisions of this Agreement.

 If such complying Withdrawal Notice is received by the Depositary no later than 11:00 a.m. (New York City time) on a
Business Day, the Depositary shall make the payments requested in such Withdrawal Notice no later than 10:00 a.m. (New York City time) on the next succeeding Business Day or such later time as requested by the Escrow Agent while funds may be
transferred in the Fed Wire electronic transfer system as specified in such Withdrawal Notice. If such complying Withdrawal Notice is received by the Depositary after 11:00 a.m. (New York City time) on a Business Day, the Depositary shall make
the payments requested in such Withdrawal Notice no later than 10:00 a.m. (New York City time) on the second Business Day next following such Business Day or such later time as requested by the Escrow Agent while funds may be transferred in the
Fed Wire electronic transfer system as specified in such Withdrawal Notice. 
  

 3 

 [Deposit Agreement (Class A)] 
  

 Section 2.4    Other Accounts. On the date of withdrawal
of any Deposit pursuant to a Notice of Financing Withdrawal, the Escrow Agent, or the Pass Through Trustee on behalf of the Escrow Agent, shall be entitled to re-deposit with the Depositary any portion thereof not used to acquire Equipment Notes and
the Depositary shall accept the same for deposit hereunder. Any sums so received for deposit shall be established as a new Deposit and credited to a new Account, all as more fully provided in Section 2.1 hereof, and thereafter the provisions of
this Agreement shall apply thereto as fully and with the same force and effect as if such Deposit had been established on the Deposit Date except that (i) such Deposit may not be withdrawn prior to the date seven days after the establishment
thereof and (ii) interest on the amount so re-deposited shall be calculated as if such amount had been on Deposit under this Agreement at all times from the Deposit Date until the date of such re-deposit, and thereafter shall bear interest as
provided in Section 2.1.. The Escrow Agent shall provide the Depositary with notice of the re-deposit at least two Business Days prior to such re-deposit and the Depositary shall promptly give notice to the Escrow Agent of receipt of each such
re-deposit and the account number assigned thereto. 
 Section 3.    Termination. This
Agreement shall terminate on the fifth Business Day after the later of the date on which (i) all of the Deposits shall have been withdrawn and paid as provided herein without any re-deposit of such funds and (ii) all accrued and unpaid
interest on the Deposits shall have been paid as provided herein, but in no event prior to the date on which the Depositary shall have performed in full its obligations hereunder. 
 Section 4.    Payments. All payments made by the Depositary hereunder shall be paid in United States
Dollars and immediately available funds by wire transfer (i) in the case of accrued interest on the Deposits payable under Section 2.2 hereof or any Final Withdrawal, directly to the Paying Agent at Wilmington Trust Company, Wilmington,
Delaware, ABA#031100092, Account No. 094739-000, Attention: Chad May, Telephone No. (302) 636-6291 (Rusty Morse), Reference: United 2009-1, or to such other account as the Paying Agent may direct from time to time in writing to the
Depositary and the Escrow Agent and (ii) in the case of any withdrawal of one or more Deposits pursuant to a Notice of Financing Withdrawal or Notice of Replacement Withdrawal, directly to or as directed by the Pass Through Trustee as specified
and in the manner provided in such Notice of Financing Withdrawal or Notice of Replacement Withdrawal. The Depositary hereby waives any and all rights of set-off, combination of accounts, right of retention or similar right (whether arising under
applicable law, contract or otherwise) it may have against the Deposits howsoever arising. Except as expressly provided below, all payments on or in respect of each Deposit shall be made free and clear of and without reduction for or on account of
any and all taxes, levies or other impositions or charges (collectively, “Taxes”). However, if the Depositary (or if the Paying Agent shall have notified the Depositary that the Paying Agent (pursuant to Section 2.04 of the
Escrow and Paying Agent Agreement)) shall be required by law to deduct or withhold any Taxes from or in respect of any sum payable hereunder, the Depositary shall (i) make such deductions or withholding and (ii) timely pay to the
appropriate authority the full amount deducted or withheld and timely file all reports and returns relating to such deductions or withholding and payment thereof in accordance with applicable law. If the date on which any payment due on any
Deposit would otherwise fall on a day which is not a Business Day, such payment shall be made on the next succeeding Business Day, and no additional interest shall accrue in respect of such extension. 
  

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 [Deposit Agreement (Class A)] 
  

 Section 5.    Representation and Warranties. The
Depositary hereby represents and warrants to United, the Escrow Agent, the Pass Through Trustee and the Paying Agent that: 
 (1)    it is a national banking association duly organized and validly existing in good standing under the laws of the United States 
 (2)    it has full power, authority and legal right to conduct its business and operations as currently
conducted and to enter into and perform its obligations under this Agreement; 
 (3)    the
execution, delivery and performance of this Agreement have been duly authorized by all necessary corporate action on the part of it and do not require any stockholder approval, or approval or consent of any trustee or holder of any indebtedness or
obligations of it, and this Agreement has been duly executed and delivered by it and constitutes its legal, valid and binding obligations enforceable against it in accordance with the terms hereof; 
 (4)    no authorization, consent or approval of or other action by, and no notice to or filing with,
any United States federal or state governmental authority or regulatory body is required for the execution, delivery or performance by it of this Agreement; 
 (5)    neither the execution, delivery or performance by it of this Agreement, nor compliance with the
terms and provisions hereof, (A) conflicts or will conflict with or results or will result in a breach or violation of any of the terms, conditions or provisions of, or will require any consent or approval under, any law, governmental rule or
regulation or the charter documents, as amended, or bylaws, as amended, of it or any similar instrument binding on it or any order, writ, injunction or decree of any court or governmental authority against it or by which it or any of its properties
is bound or (B) results or will result in a material breach or violation of any of the terms, conditions or provisions of any indenture, mortgage or contract or other agreement or instrument to which it is a party or by which it or any of its
properties is bound, or constitutes or will constitute a default thereunder or results or will result in the imposition of any lien upon any of its properties; and 
 (6)    there are no pending or, to its knowledge, threatened actions, suits, investigations or
proceedings (whether or not purportedly on behalf of it) against or affecting it or any of its property before or by any court or administrative agency which, if adversely determined, (i) would adversely affect the ability of it to perform its
obligations under this Agreement or (ii) would call into question or challenge the validity of this Agreement or the enforceability hereof in accordance with the terms hereof, nor is the Depositary in default with respect to any order of any
court, governmental authority, arbitration board or administrative agency so as to adversely affect its ability to perform its obligations under this Agreement. 
 Section 6.    Transfer. Neither party hereto shall be entitled to assign or otherwise transfer this Agreement (or any interest herein) other than (in the case of the
Escrow Agent) to a successor escrow agent under the

  

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 [Deposit Agreement (Class A)] 
  

 
Escrow and Paying Agent Agreement, and any purported assignment in violation thereof shall be void. This Agreement shall be binding upon the parties hereto and their respective successors and (in
the case of the Escrow Agent) permitted assigns. Upon the occurrence of the Transfer (as defined below) contemplated by the Assignment and Assumption Agreement (as defined below), the Pass Through Trustee shall (without further act) be deemed to
have transferred all of its right, title and interest in and to this Agreement to the trustee of the Successor Trust (as defined below) and, thereafter, the trustee of the Successor Trust shall be deemed to be the “Pass Through Trustee”
hereunder with the rights of the “Pass Through Trustee” hereunder, and each reference herein to “United Air Lines Pass Through Trust 20091A-O” shall be deemed to be a reference to “United Air Lines Pass Through Trust
2009-1A-S”. The Escrow Agent and the Depositary hereby acknowledge and consent to the Transfer contemplated by the Assignment and Assumption Agreement. For the purposes of this Section 6, “Transfer” means the transfer
contemplated by the Assignment and Assumption Agreement; “Assignment and Assumption Agreement” means the Assignment and Assumption Agreement to be entered into between the Pass Through Trustee and the trustee of the Successor Trust;
and “Successor Trust” means the United Air Lines Pass Through Trust 2009-1A-S. 
 Section 7.    Amendment, Etc. This Agreement may not be amended, waived or otherwise modified except by an instrument in writing signed by the parties hereto. 
 Section 8.    Notices. Unless otherwise expressly provided herein, any notice, instruction or other
communication under this Agreement shall be in writing (including by facsimile) and shall be deemed to be given and effective upon receipt thereof (or, if received after normal business hours, the next open of business on a Business Day). All
notices shall be sent to (x) in the case of the Depositary, JPMorgan Chase Bank, N.A., 4 New York Plaza, 21st
 Floor, New York, New York 10004, Attention: Michael Kuzmicz/Andy Jacknick (Telecopier: (212) 623-6168) or (y) in the case of the Escrow Agent, Wilmington Trust Company, 1100 North
Market Street, Wilmington, Delaware 19890, Attention: Corporate Trust Administration (Telecopier: (302) 651-8882), in each case, with a copy to the Pass Through Trustee, Wilmington Trust Company, 1100 North Market Street, Wilmington, Delaware
19890, Attention: Corporate Capital Market Services (Telecopier: (302) 636-4140) and to United, United Air Lines, Inc., 77 West Wacker Drive, Chicago, IL 60601, Attention: Stephen R. Lieberman, Vice President and Treasurer (Telecopier:
(312) 997-8333) with a copy to United Air Lines, Inc., 77 West Wacker Drive, Chicago, IL 60601, Attention: Paul R. Lovejoy, Senior Vice President, General Counsel and Secretary. (Telecopier: (312) 997-8333) (or at such other address as any
such party may specify from time to time in a written notice to the parties hereto). On or prior to the execution of this Agreement, the Escrow Agent has delivered to the Depositary an incumbency certificate containing specimen signatures of the
representatives of the Escrow Agent who are authorized to give notices and instructions with respect to this Agreement. The Depositary may conclusively rely on such certificate until the Depositary receives written notice from the Escrow Agent to
the contrary. 
 Section 9.    Obligations Unconditional. The Depositary hereby
acknowledges and agrees that its obligation to repay each Deposit together with interest thereon as provided herein is absolute, irrevocable and unconditional and constitutes a full recourse obligation of the Depositary enforceable against it to the
full extent of all of its assets and properties. 
  

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 [Deposit Agreement (Class A)] 
  

 Section 10.    Entire Agreement. This Agreement
(including all attachments hereto) sets forth all of the promises, covenants, agreements, conditions and understandings between the Depositary and the Escrow Agent with respect to the subject matter hereof and supersedes all prior and
contemporaneous agreements and undertakings, inducements or conditions, express or implied, oral or written. 
 Section 11.    Governing Law. This Agreement, and the rights and obligations of the Depositary and the Escrow Agent with respect to the Deposits, shall be governed by, and construed in accordance with,
the laws of the State of New York and subject to the provisions of Regulation D of the Board of Governors of the Federal Reserve System (or any successor), as the same may be modified and supplemented and in effect from time to time. 
 Section 12.    Submission to Non-Exclusive Jurisdiction in New York. Each of the parties hereto,
to the extent it may do so under applicable law, hereby (a) irrevocably submits itself to the non-exclusive jurisdiction of the courts of the State of New York sitting in the City of New York and to the non-exclusive jurisdiction of the United
States District Court for the Southern District of New York, for the purposes of any suit, action or other proceeding arising out of this Agreement, the subject matter hereof or any of the transactions contemplated hereby brought by any party or
parties hereto, or their successors or permitted assigns and (b) waives, and agrees not to assert, by way of motion, as a defense, or otherwise, in any such suit, action or proceeding, that the suit, action or proceeding is brought in an
inconvenient forum, that the venue of the suit, action or proceeding is improper or that this Agreement or the subject matter hereof or any of the transactions contemplated hereby may not be enforced in or by such courts. 
 Section 13.    Waiver of Jury Trial Right. EACH OF THE DEPOSITARY AND THE ESCROW AGENT
ACKNOWLEDGES AND ACCEPTS THAT IN ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT SUCH PARTY IRREVOCABLY WAIVES ITS RIGHT TO A TRIAL BY JURY. 
 Section 14.    Counterparts. This Agreement may be executed in one or more counterparts, all of which
taken together shall constitute one instrument. 
 Section 15.    Rights of
Receiptholders. The Depositary acknowledges that, if the Depositary shall fail to pay when due hereunder any interest on the Deposits or the Final Withdrawal, the “Receiptholders” (as defined in the Escrow and Paying Agent
Agreement) shall have the right to claim directly against the Depositary and that any such claim shall not be subject to defenses that the Depositary may have against the Escrow Agent. 
 Section 16.    Limitation on Damages.
 Section 16.1  The Depositary shall have only those duties as are specifically and expressly provided herein and no other
duties shall be implied. The Depositary may rely upon and shall not be liable for acting or refraining from acting upon any written notice, document, instruction or request furnished to it hereunder and believed by it to be genuine and to have been
signed or presented by the Escrow Agent without inquiry and without requiring substantiating evidence of any kind. The Depositary shall be under no duty to inquire into or investigate the validity, accuracy or content of any such document, notice,
instruction or request except as provided in Section 17 below. The Depositary shall have no duty to solicit any payments including, without limitation, the Deposits. 
  

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 [Deposit Agreement (Class A)] 
  

 Section 16.2  The Depositary shall not be liable for any action taken,
suffered or omitted to be taken by it except to the extent that a final adjudication of a court of competent jurisdiction determines that the Depositary’s gross negligence or willful misconduct was the primary cause of any loss. The Depositary
may execute any of its powers and perform any of its duties hereunder directly or through agents or attorneys, and shall be liable only for its gross negligence or willful misconduct (as finally adjudicated in a court of competent jurisdiction) in
the selection of any such agent or attorney. The Depositary may consult with counsel, accountants and other skilled persons to be selected and retained by it. The Depositary shall not be liable for any action taken, suffered or omitted to be taken
by it in accordance with, or in reliance upon, the advice or opinion of any such counsel, accountants or other skilled persons. In the event that the Depositary shall be uncertain or believe there is some ambiguity as to its duties or rights
hereunder or shall receive instructions, claims or demands from any party hereto which, in its opinion, conflict with any of the provisions of this Agreement, it shall be entitled to refrain from taking any action and its sole obligation shall be to
keep safely all property held in escrow until it shall be given a direction in writing by the Escrow Agent which eliminates such ambiguity or uncertainty to the satisfaction of Depositary or by a final and non-appealable order or judgment of a court
of competent jurisdiction. The Escrow Agent agrees to pursue any redress or recourse in connection with any dispute without making the Depositary a party to the same. In the event of any conflict or inconsistency between any provision in this
Agreement and a provision in any other document, the provisions of this Agreement shall control. Anything in this Agreement to the contrary notwithstanding, in no event shall the Depositary be responsible or liable for special, incidental, punitive,
indirect or consequential loss or damage of any kind whatsoever (including, but not limited to, loss of profit, whether or not foreseeable) irrespective of whether the Depositary has been advised of the likelihood of such loss or damage and
regardless of the form of action. 
 Section 16.3  Section 326 of the Uniting and Strengthening America by
Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (“USA PATRIOT Act”) requires the Depositary to implement reasonable procedures to verify the identity of any person that opens a new account with it.
Accordingly, the Parties acknowledge that Section 326 of the USA PATRIOT Act and the Depositary’s identity verification procedures require the Depositary to obtain information which may be used to confirm the Parties identity including
without limitation name, address and organizational documents (“identifying information”). The Parties agree to provide the Depositary with and consent to the Depositary obtaining from third parties any such identifying information
required as a condition of opening an account with or using any service provided by the Depositary. 
 Section 16.4  The Escrow Agent has provided the Depositary with its fully executed Internal Revenue Service (“IRS”) Form W-9. The Escrow Agent represents that its correct TIN assigned by the IRS, or any other taxing
authority, is set forth in the delivered form. Any tax returns required to be filed by reason of the Escrow Agent making the Deposits or acting pursuant to the Escrow and Paying Agent Agreement (other than those required by law to be filed by the
Depositary) will be prepared and filed by the Escrow Agent with the appropriate taxing authority as required by law. The Escrow Agent acknowledges and agrees that the Depositary shall have no responsibility for the preparation and/or filing of any
income, franchise or any other tax return with respect to the Deposits or any income earned by the Deposits. 
  

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 [Deposit Agreement (Class A)] 
  

 Section 16.5  No party to this Agreement is liable to any other party for
losses due to, or if it is unable to perform its obligations under the terms of this Agreement because of, acts of God, fire, war, terrorism, floods, strikes, electrical outages, equipment or transmission failure, or other causes reasonably beyond
its control. If any provision of this Agreement is determined to be prohibited or unenforceable by reason of any applicable law or a jurisdiction, then such provision shall, as to such jurisdiction, be ineffective to the extent of such prohibition
or unenforceability without invalidating the remaining provisions thereof, and any such prohibition or unenforceability in such jurisdiction. shall not invalidiate or render unenforceable such provisions in any other jurisdiction. 
 Section 17.    Security Procedures. With respect to all funds transfer instructions that are given
pursuant to this Agreement (other than in writing at the time of execution of this Agreement) whether in writing, by facsimile or otherwise, the Depositary is authorized to seek confirmation of such instructions by telephone call-back to the person
or persons designated on Schedule II hereto (“Schedule II”), and the Depositary may rely upon the confirmation of anyone purporting to be the person or persons so designated. Each funds transfer instruction shall be executed by an
authorized signatory, a list of such signatories is set forth on Schedule II. The persons and telephone numbers for call-backs may be changed only in a writing actually received and acknowledged by the Depositary. If the Depositary is unable to
contact any of the authorized representatives identified in Schedule II, the Depositary is hereby authorized to seek confirmation of such instructions by telephone call-back to any one or more of the Escrow Agent’s executive officers,
(“Executive Officers”), as the case may be, which shall include the titles of Assistant Vice President or Vice President, as the Depositary may select. Such “Executive Officer” shall deliver to the Depositary fully executed
incumbency certificate, and the Depositary may rely upon the confirmation of anyone purporting to be any such officer. The Depositary and the beneficiary’s bank in any funds transfer may rely solely upon any account numbers or similar
identifying numbers provided by the Escrow Agent to identify (a) the beneficiary, (b) the beneficiary’s bank, or (c) an intermediary bank. The Depositary may apply any of the escrowed funds for any payment order it executes using
any such identifying number, even when its use may result in a person other than the beneficiary being paid, or the transfer of funds to a bank other than the beneficiary’s bank or designated intermediary bank, as applicable. The Escrow Agent
acknowledges that these security procedures are commercially reasonable. 
 *        *        * 
  

 9 

 [Deposit Agreement (Class A)] 
  

 IN WITNESS WHEREOF, the Escrow Agent and the Depositary have caused this Deposit
Agreement to be duly executed as of the day and year first above written. 
  

			
	 WILMINGTON TRUST COMPANY,
 as Escrow Agent

		
	By:	 	  

		 	Name:
		 	Title:
	
	 JPMORGAN CHASE BANK, N.A.,
 as Depositary

		
	By:	 	  

		 	Name:
		 	Title:

  

 10 

 [Deposit Agreement (Class A)] 
  

 SCHEDULE I 
 SCHEDULE OF DEPOSITS 
 (CLASS A) 

 

					
	 Aircraft Registration Number
  
	  	 Amount
  
	  	 Sub-Account
  

	N831UA	  	$12,062,000  	  	 
	N833UA	  	12,749,000	  	 
	N834UA	  	12,904,000	  	 
	N835UA	  	12,822,000	  	 
	N836UA	  	12,876,000	  	 
	N837UA	  	12,919,000	  	 
	N838UA	  	13,110,000	  	 
	N839UA	  	13,121,000	  	 
	N840UA	  	13,166,000	  	 
	N841UA	  	12,992,000	  	 
	 	  	 	  	 
	 	  	 	  	 
	N467UA	  	13,210,000	  	 
	N468UA	  	13,457,000	  	 
	N469UA	  	13,821,000	  	 
	N470UA	  	14,050,000	  	 
	N471UA	  	14,022,000	  	 
	N472UA	  	13,877,000	  	 
	 	 	 
	 	  	 	  	 
	N664UA	  	20,614,000	  	 
	N667UA	  	18,603,000	  	 
	N669UA	  	19,432,000	  	 
	N670UA	  	19,846,000	  	 
	N671UA	  	20,894,000	  	 
	N675UA	  	23,027,000	  	 
	N676UA	  	23,867,000	  	 
	 	 	 
	 	  	 	  	 
	N794UA	  	34,923,000	  	 
	N795UA	  	36,118,000	  	 
	N204UA	  	40,208,000	  	 
	 	 	 
	 	  	 	  	 
	N117UA	  	36,329,000	  	 
	N118UA	  	36,309,000	  	 
	N122UA	  	38,793,000	  	 
	N127UA	  	37,987,000	  	 
	N128UA	  	$40,999,000  	  	 
	 	 	 
	 	  	 	  	 

  

 SCHEDULE I 
 Page 1 

 [Deposit Agreement (Class A)] 
  

 SCHEDULE II 
 Telephone Number(s) and authorized signature(s) for 
 Person(s) Designated to give and confirm
Funds Transfer Instructions 
 If to Escrow Agent: 
  

											
	 	  	Name	  	 	  	Telephone Number	  	 	  	Signature
						
	1.	  	  
	  		  	  
	  		  	  

						
	2.	  	  
	  		  	  
	  		  	  

						
	3.	  	  
	  		  	  
	  		  	  

 Telephone call backs shall be made to both Parties if joint instructions are required pursuant to the
agreement. All funds transfer instructions must include the signature of the person(s) authorizing said funds transfer and must not be the same person confirming said transfer. 
  

 EXHIBIT A 
 Page 1 

 [Deposit Agreement (Class A)] 
  

 EXHIBIT A 
 NOTICE OF FINANCING WITHDRAWAL 
  
 JPMorgan Chase Bank, N.A. 
 4 New York Plaza, 21st Floor 
 New York, NY 10004 
 Attention: Michael Kuzmicz/Andy Jacknick 
 Telecopier: (212) 623-6168 
 Gentlemen: 
 Reference is made to the Deposit Agreement (Class A) dated as of October 13, 2009 (the “Deposit Agreement”) between
Wilmington Trust Company, as Escrow Agent, and JPMorgan Chase Bank, N.A., as Depositary (the “Depositary”). 
 In accordance with Section 2.3(a) of the Deposit Agreement, the undersigned hereby requests the withdrawal of the entire amount of the Deposit, $            , Account
No.            . 
 The undersigned hereby directs the Depositary to
pay the entire amount of the Deposit to [            , Account No.             , Reference:
            ] on             , 200    , upon the telephonic request of a representative of Wilmington Trust
Company, the Pass Through Trustee. 
  

			
	 WILMINGTON TRUST COMPANY,
 as Escrow Agent

		
	By:	 	  

		 	Name:
		 	Title:

 Dated:
                , 200     
  

 EXHIBIT A 
 Page 1 

 [Deposit Agreement (Class A)] 
  

 EXHIBIT B 
 NOTICE OF FINAL WITHDRAWAL 
  
 JPMorgan Chase Bank, N.A. 
 4 New York Plaza, 21st Floor 
 New York, NY 10004 
 Attention: Michael Kuzmicz/Andy Jacknick 
 Telecopier: (212) 623-6168 
 Gentlemen: 
 Reference is made to the Deposit Agreement (Class A) dated as of October 13, 2009 (the “Deposit Agreement”) between
Wilmington Trust Company, as Escrow Agent, and JPMorgan Chase Bank, N.A., as Depositary (the “Depositary”). 
 In accordance with Section 2.3(b)(i) of the Deposit Agreement, the undersigned hereby requests the withdrawal of the entire amount of all Deposits for payment on             ,
200    . 
 The undersigned hereby directs the Depositary to pay the entire amount of the Deposits and
accrued interest thereon to the Paying Agent at             , ABA#             , Account
No.             , Reference:             . 
  

			
	 WILMINGTON TRUST COMPANY,
 as Escrow Agent

		
	By:	 	  

		 	Name: 
		 	Title:

 Dated:
                , 20    . 
  

 EXHIBIT B 
 Page 1 

 [Deposit Agreement (Class A)] 
  

 EXHIBIT C 
 NOTICE OF REPLACEMENT WITHDRAWAL 
 JPMorgan Chase Bank, N.A.

 4 New York Plaza, 21st Floor 
 New
York, NY 10004 
 Attention: Michael Kuzmicz/Andy Jacknick 
 Telecopier: (212) 623-6168 
 Gentlemen: 
 Reference is made to the Deposit Agreement (Class A) dated as of October 13, 2009 (the “Deposit Agreement”) between
Wilmington Trust Company, as Escrow Agent, and JPMorgan Chase Bank, N.A., as Depositary (the “Deposit”). 
 In
accordance with Section 2.3(b)(ii) of the Deposit Agreement, the undersigned hereby requests the withdrawal of the entire amount of all Deposits for payment on             ,
20    . 
 The undersigned hereby directs the Depositary to pay the entire amount of the Deposits accrued
interest thereon to [                    ]. 
  

			
	 WILMINGTON TRUST COMPANY,
 as Escrow Agent

		
	By:	 	  

		 	Name: 
		 	Title:

 Dated:
                , 20     
  

 EXHIBIT C 
 Page 1Escrow and Paying Agent Agreement, dated as of October 13, 2009

 Exhibit 4.11 
 ESCROW AND 
 PAYING AGENT AGREEMENT (CLASS A) 

 dated as of October 13, 2009 
 among 
 WILMINGTON TRUST COMPANY 
 as Escrow Agent 
 MORGAN STANLEY & CO. INCORPORATED, 
 J.P. MORGAN SECURITIES INC. 
 and  
 GOLDMAN, SACHS & CO.  
 as Underwriters 
 WILMINGTON TRUST COMPANY, 
 not in its individual
capacity, 
 but solely as Pass Through Trustee 
 for and on behalf of 
 United Air Lines Pass Through Trust 2009-1A-O 
 as Pass Through Trustee 
 and 
 WILMINGTON TRUST COMPANY 
 as Paying Agent 

							
	 	 	 	 	TABLE OF CONTENTS	  	 
	 	 	 	 	 	  	Page
			
	Section 1.	 	Escrow Agent	  	2
		 	1.01.	 	Appointment of Escrow Agent	  	2
		 	1.02.	 	Instruction; Etc	  	3
		 	1.03.	 	Initial Escrow Amount; Issuance of Escrow Receipts	  	3
		 	1.04.	 	Payments to Receiptholders	  	4
		 	1.05.	 	Mutilated, Destroyed, Lost or Stolen Escrow Receipt	  	4
		 	1.06.	 	Additional Escrow Amounts	  	5
		 	1.07.	 	Resignation or Removal of Escrow Agent	  	5
		 	1.08.	 	Persons Deemed Owners	  	5
		 	1.09.	 	Further Assurances	  	5
			
	Section 2.	 	Paying Agent	  	6
		 	2.01.	 	Appointment of Paying Agent	  	6
		 	2.02.	 	Establishment of Paying Agent Account	  	6
		 	2.03.	 	Payments from Paying Agent Account	  	6
		 	2.04.	 	Withholding Taxes	  	7
		 	2.05.	 	Resignation or Removal of Paying Agent	  	7
		 	2.06.	 	Notice of Final Withdrawal	  	7
			
	Section 3.	 	Payments	  	8
			
	Section 4.	 	Other Actions	  	8
			
	Section 5.	 	Representations and Warranties of the Escrow Agent	  	8
			
	Section 6.	 	Representations and Warranties of the Paying Agent	  	9
			
	Section 7.	 	Indemnification	  	10
			
	Section 8.	 	Amendment, Etc	  	11
			
	Section 9.	 	Notices	  	11
			
	Section 10.	 	Transfer	  	12
			
	Section 11.	 	Entire Agreement	  	12
			
	Section 12.	 	Governing Law	  	12
			
	Section 13.	 	Waiver of Jury Trial Right	  	12
			
	Section 14.	 	Counterparts	  	12
			
	Section 15.	 	Rights of Holders	  	12
			
	Exhibit A	 	Escrow Receipt	  	
	Exhibit B	 	Withdrawal Certificate	  	

  

 i 

 ESCROW AND PAYING AGENT AGREEMENT (CLASS A) 
 ESCROW AND PAYING AGENT AGREEMENT (Class A) dated as of October 13, 2009 (as amended, modified or supplemented from time to
time, this “Agreement”) among WILMINGTON TRUST COMPANY, a Delaware banking corporation, as Escrow Agent (in such capacity, together with its successors in such capacity, the “Escrow Agent”); MORGAN
STANLEY & CO. INCORPORATED, J.P. MORGAN SECURITIES INC. and GOLDMAN, SACHS & CO., as Underwriters (the “Underwriters” and together with their respective transferees and assigns as registered
owners of the Certificates, the “Investors”) under the Underwriting Agreement referred to below; WILMINGTON TRUST COMPANY, a Delaware banking corporation, not in its individual capacity except as otherwise expressly provided
herein, but solely as trustee (in such capacity, together with its successors in such capacity, the “Pass Through Trustee”) under the Pass Through Trust Agreement referred to below; and WILMINGTON TRUST COMPANY, a Delaware
banking corporation, as paying agent hereunder (in such capacity, together with its successors in such capacity, the “Paying Agent”). 
 W I T N E S S E T H: 
 WHEREAS, United Air Lines, Inc. (“United”) and the Pass Through Trustee have entered into a Trust Supplement, dated as of October 13, 2009 (the “Trust
Supplement”) to the Pass Through Trust Agreement, dated as of June 26, 2007 (together, as amended, modified or supplemented from time to time in accordance with the terms thereof, the “Pass Through Trust Agreement”)
relating to United Air Lines Pass Through Trust 2009-1A-O (the “Pass Through Trust”) pursuant to which the United Air Lines Pass Through Trust, Series 2009-1A-O Certificates referred to therein (the “Certificates”)
are being issued (the date of such issuance, the “Issuance Date”); 
 WHEREAS, United and the
Underwriters have entered into an Underwriting Agreement dated October 5, 2009 (as amended, modified or supplemented from time to time in accordance with the terms thereof, the “Underwriting Agreement”) pursuant to which the
Pass Through Trustee will issue and sell the Certificates to the Underwriters (the net proceeds of such sale being herein referred to as the “Net Proceeds”); 
 WHEREAS, United, the Pass Through Trustee and certain other persons concurrently herewith are entering into the Note Purchase
Agreement, dated as of the date hereof (the “Note Purchase Agreement”), pursuant to which the Pass Through Trustee has agreed to acquire from time to time on or prior to the Deposit Period Termination Date (as defined in the Note
Purchase Agreement) equipment notes (the “Equipment Notes”) issued to finance certain aircraft currently owned by United utilizing a portion of the Net Proceeds; 
 WHEREAS, the Underwriters and the Pass Through Trustee intend that the Net Proceeds be held in escrow by the Escrow Agent on behalf
of the Investors, subject to withdrawal upon request by the Pass Through Trustee and satisfaction of the conditions set forth in the Note Purchase Agreement for the purpose of purchasing Equipment Notes, and that pending such withdrawal the Net
Proceeds be deposited on behalf of the Escrow Agent with JPMorgan Chase Bank, N.A., a national banking association, as Depositary (the “Depositary” which shall also be deemed to refer to any Replacement Depositary (as defined in the
Note

 
[Escrow and Paying Agent Agreement (Class A)] 
  

 
Purchase Agreement) from and after the date on which the Deposits are transferred to such Replacement Depositary) under the Deposit Agreement, dated as of the date hereof between the Depositary
and the Escrow Agent relating to the Pass Through Trust (as amended, modified, supplemented or replaced from time to time in accordance with the terms thereof, the “Deposit Agreement” which shall also be deemed to refer to any
Replacement Deposit Agreement (as defined in the Note Purchase Agreement) to which the Escrow Agent becomes a party pursuant to Section 1.02(a) hereof from and after the transfer of the Deposits from the Depositary to the Replacement
Depositary) pursuant to which, among other things, the Depositary will pay interest for distribution to the Investors and establish accounts from which the Escrow Agent shall make withdrawals upon request of and proper certification by the Pass
Through Trustee; 
 WHEREAS, the Escrow Agent wishes to appoint the Paying Agent to pay amounts required to be
distributed to the Investors in accordance with this Agreement; and 
 WHEREAS, capitalized terms used but not defined
herein shall have the meanings ascribed to such terms in the Pass Through Trust Agreement. 
 NOW, THEREFORE, in
consideration of the obligations contained herein, and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereto hereby agree as follows: 
 Section 1.      Escrow Agent. 
 1.01.      Appointment of Escrow Agent.  Each of the Underwriters, for and on behalf of each
of the Investors, hereby irrevocably appoints, authorizes and directs the Escrow Agent to act as escrow agent and fiduciary hereunder and under the Deposit Agreement for such specific purposes and with such powers as are specifically delegated to
the Escrow Agent by the terms of this Agreement, together with such other powers as are reasonably incidental thereto. Any and all money received and held by the Escrow Agent under this Agreement or the Deposit Agreement shall be held in escrow by
the Escrow Agent in accordance with the terms of this Agreement. This Agreement is irrevocable and the Investors’ rights with respect to any monies received and held in escrow by the Escrow Agent under this Agreement or the Deposit Agreement
shall only be as provided under the terms and conditions of this Agreement and the Deposit Agreement. The Escrow Agent (which term as used in this sentence shall include reference to its affiliates and its own and its affiliates’ officers,
directors, employees and agents): (a) shall have no duties or responsibilities except those expressly set forth in this Agreement; (b) shall not be responsible to the Pass Through Trustee or the Investors for any recitals, statements,
representations or warranties of any person other than itself contained in this Agreement or the Deposit Agreement or for the failure by the Pass Through Trustee, the Investors or any other person or entity (other than the Escrow Agent) to perform
any of its obligations hereunder (whether or not the Escrow Agent shall have any knowledge thereof); and (c) shall not be responsible for any action taken or omitted to be taken by it hereunder or provided for herein or in connection herewith,
except for its own willful misconduct or gross negligence (or simple negligence in connection with the handling of funds actually received by it in accordance with the terms of this Agreement) or breach of its obligations hereunder. 
  

 2 

 
[Escrow and Paying Agent Agreement (Class A)] 
  

 1.02.      Instruction; Etc.  The
Underwriters, for and on behalf of each of the Investors, hereby irrevocably instruct the Escrow Agent, and the Escrow Agent agrees, (a) to enter into the Deposit Agreement and, if requested by the Company pursuant to Section 4(a)(iii) of
the Note Purchase Agreement, to enter into a Replacement Deposit Agreement with the Replacement Depositary specified by the Company, (b) to appoint the Paying Agent as provided in this Agreement, (c) upon receipt at any time and from time
to time prior to the Termination Date (as defined below) of a certificate substantially in the form of Exhibit B hereto (a “Withdrawal Certificate”) executed by the Pass Through Trustee, together with an attached Notice of
Financing Withdrawal in substantially the form of Exhibit A to the Deposit Agreement duly completed by the Pass Through Trustee (the “Applicable Notice of Financing Withdrawal” and the withdrawal to which it relates, a
“Financing Withdrawal”), immediately to execute the Applicable Notice of Financing Withdrawal as Escrow Agent and transmit it to the Depositary by facsimile transmission in accordance with the Deposit Agreement; provided
that, upon the request of the Pass Through Trustee after such transmission, the Escrow Agent shall cancel such Applicable Notice of Financing Withdrawal, (d) upon receipt of a Withdrawal Certificate executed by the Pass Through Trustee,
together with an attached Notice of Replacement Withdrawal in substantially the form of Exhibit C to the Deposit Agreement duly completed by the Pass Through Trustee, to (X) give such Notice of Replacement Withdrawal to the Depositary
requesting a withdrawal, on the date specified in such notice, which shall not be less than Five Business Days after such notice is given (the “Replacement Withdrawal Date”), of all Deposits then held by the Depositary together with
all accrued and unpaid interest on such Deposits to but excluding the Replacement Withdrawal Date, and (Y) direct the Depositary to transfer such Deposits and accrued interest on behalf of the Escrow Agent to the Replacement Depositary in
accordance with the Replacement Deposit Agreement, and (e) if there are any undrawn Deposits (as defined in the Deposit Agreement) on the “Termination Date”, which shall mean the earlier of (i) the Deposit Period
Termination Date (as defined in the Note Purchase Agreement) and (ii) the day on which the Escrow Agent receives notice from the Pass Through Trustee that the Pass Through Trustee’s obligation to purchase Equipment Notes under the Note
Purchase Agreement has terminated, to immediately give notice to the Depositary (with a copy to the Paying Agent) substantially in the form of Exhibit B to the Deposit Agreement requesting a withdrawal of all of the remaining Deposits, together
with accrued and unpaid interest on such Deposits to the date of withdrawal, on the 25th day after the date that such notice of withdrawal is given to the Depositary (or, if not a Business Day, on the next succeeding Business Day) (a “Final
Withdrawal”), provided that if the day scheduled for the Final Withdrawal in accordance with the foregoing is within 10 days before or after a Regular Distribution Date, then the Escrow Agent shall request that such requested Final
Withdrawal be made on such Regular Distribution Date (the date of such requested withdrawal, the “Final Withdrawal Date”). If for any reason the Escrow Agent shall have failed to give the Final Withdrawal notice to the Depositary on
or before January 14, 2010, and there are unwithdrawn Deposits on such date, the Final Withdrawal Date shall be deemed to be January 21, 2010. 
 1.03.      Initial Escrow Amount; Issuance of Escrow Receipts.  The Escrow Agent hereby directs the Underwriters to, and the Underwriters hereby acknowledge
that on the date hereof they shall, irrevocably deliver to the Depositary on behalf of the Escrow Agent, an amount in U.S. dollars (“Dollars”) and immediately available funds equal to $659,107,000 for deposit on behalf of the Escrow
Agent with the Depositary in accordance with Section 2.1 of the Deposit Agreement. The Underwriters hereby instruct the Escrow Agent, upon receipt of such sum from the Underwriters, to confirm such receipt by executing and

  

 3 

 
[Escrow and Paying Agent Agreement (Class A)] 
  

 
delivering to the Pass Through Trustee an Escrow Receipt in the form of Exhibit A hereto (an “Escrow Receipt”), (a) to be affixed by the Pass Through Trustee to each
Certificate and (b) to evidence the same percentage interest (the “Escrow Interest”) in the Account Amounts (as defined below) as the Fractional Undivided Interest in the Pass Through Trust evidenced by the Certificate to which
it is to be affixed. The Escrow Agent shall provide to the Pass Through Trustee for attachment to each Certificate newly issued under and in accordance with the Pass Through Trust Agreement an executed Escrow Receipt as the Pass Through Trustee may
from time to time request of the Escrow Agent. Each Escrow Receipt shall be registered by the Escrow Agent in a register (the “Register”) maintained by the Escrow Agent in the name of the same holder that is the holder of the
Certificate to which it is attached and may not thereafter be detached from such Certificate to which it is to be affixed prior to the distribution of the Final Withdrawal (the “Final Distribution”). After the Final Distribution, no
additional Escrow Receipts shall be issued and the Pass Through Trustee shall request the return to the Escrow Agent for cancellation of all outstanding Escrow Receipts. 
 1.04.      Payments to Receiptholders.  All payments and distributions made to holders of an Escrow Receipt (collectively “Receiptholders”)
in respect of the Escrow Receipt shall be made only from amounts deposited in the Paying Agent Account (as defined below) (“Account Amounts”). Each Receiptholder, by its acceptance of an Escrow Receipt, agrees that (a) it will
look solely to the Account Amounts for any payment or distribution due to such Receiptholder pursuant to the terms of the Escrow Receipt and this Agreement (subject to Section 15 hereof) and (b) it will have no recourse to United, the Pass
Through Trustee, the Paying Agent, the Escrow Agent or Wilmington Trust Company, except as expressly provided herein or in the Pass Through Trust Agreement. No Receiptholder shall have any right to vote or in any manner otherwise control the
operation and management of the Paying Agent Account or the obligations of the parties hereto, nor shall anything set forth herein, or contained in the terms of the Escrow Receipt, be construed so as to constitute the Receiptholders from time to
time as partners or members of an association. 
 1.05.      Mutilated, Destroyed, Lost or
Stolen Escrow Receipt.  If (a) any mutilated Escrow Receipt is surrendered to the Escrow Agent or the Escrow Agent receives evidence to its satisfaction of the destruction, loss or theft of any Escrow Receipt and (b) there is
delivered to the Escrow Agent and the Pass Through Trustee such security, indemnity or bond, as may be required by them to hold each of them harmless, then, absent notice to the Escrow Agent or the Pass Through Trustee that such destroyed, lost or
stolen Escrow Receipt has been acquired by a bona fide purchaser, and provided that the requirements of Section 8-405 of the Uniform Commercial Code in effect in any applicable jurisdiction are met, the Escrow Agent shall execute, authenticate
and deliver, in exchange for or in lieu of any such mutilated, destroyed, lost or stolen Escrow Receipt, a new Escrow Receipt or Escrow Receipts and of like Escrow Interest in the Account Amounts and bearing a number not contemporaneously
outstanding. 
 In connection with the issuance of any new Escrow Receipt under this Section 1.05, the Escrow Agent may
require the payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Pass Through Trustee and the Escrow Agent) connected
therewith. 
  

 4 

 
[Escrow and Paying Agent Agreement (Class A)] 
  

 Any duplicate Escrow Receipt issued pursuant to this Section 1.05 shall constitute
conclusive evidence of the appropriate Escrow Interest in the Account Amounts, as if originally issued, whether or not the lost, stolen or destroyed Escrow Receipt shall be found at any time. 
 The provisions of this Section are exclusive and shall preclude (to the extent lawful) all other rights and remedies with respect to
the replacement or payment of mutilated, destroyed, lost or stolen Escrow Receipts. 
 1.06.      Additional Escrow Amounts.  On the date of any Financing Withdrawal, the Pass Through Trustee may re-deposit with the Depositary some or all of the amounts so withdrawn in accordance
with Section 2.4 of the Deposit Agreement. 
 1.07.      Resignation or Removal of Escrow
Agent.  Subject to the appointment and acceptance of a successor Escrow Agent as provided below, the Escrow Agent may resign at any time by giving 30 days’ prior written notice thereof to the Investors, but may not otherwise be
removed except for cause by the written consent of the Investors with respect to Investors representing Escrow Interests aggregating not less than a majority in interest in the Account Amounts (an “Action of Investors”). Upon any
such resignation or removal, the Investors, by an Action of Investors, shall have the right to appoint a successor Escrow Agent. If no successor Escrow Agent shall have been so appointed and shall have accepted such appointment within 30 days after
the retiring Escrow Agent’s giving of notice of resignation or the removal of the retiring Escrow Agent, then the retiring Escrow Agent may appoint a successor Escrow Agent. Any successor Escrow Agent shall be a bank which has an office in the
United States with a combined capital and surplus of at least $100,000,000. Upon the acceptance of any appointment as Escrow Agent hereunder by a successor Escrow Agent, such successor Escrow Agent shall enter into such documents as the Pass Through
Trustee shall require and shall thereupon succeed to and become vested with all the rights, powers, privileges and duties of the retiring Escrow Agent, and the retiring Escrow Agent shall be discharged from its duties and obligations hereunder. No
resignation or removal of the Escrow Agent shall be effective unless a written confirmation shall have been obtained from each of Moody’s Investors Service, Inc. and Standard & Poor’s Ratings Services, a Standard &
Poor’s Financial Services LLC business, that the replacement of the Escrow Agent with the successor Escrow Agent will not result in (a) a reduction of the rating for the Certificates below the then current rating for the Certificates or
(b) a withdrawal or suspension of the rating of the Certificates. 
 1.08.      Persons
Deemed Owners.  Prior to due presentment of a Certificate for registration of transfer, the Escrow Agent and the Paying Agent may treat the Person in whose name any Escrow Receipt is registered (as of the day of determination) as the
owner of such Escrow Receipt for the purpose of receiving distributions pursuant to this Agreement and for all other purposes whatsoever, and neither the Escrow Agent nor the Paying Agent shall be affected by any notice to the contrary. 

1.09.      Further Assurances.  The Escrow Agent agrees to take such actions, and execute
such other documents, as may be reasonably requested by the Pass Through Trustee in order to effectuate the purposes of this Agreement and the performance by the Escrow Agent of its obligations hereunder. 
  

 5 

 
[Escrow and Paying Agent Agreement (Class A)] 
  

 Section 2.      Paying Agent. 
 2.01.       Appointment of Paying Agent.  The Escrow Agent hereby irrevocably appoints and
authorizes the Paying Agent to act as its paying agent hereunder, for the benefit of the Investors, for such specific purposes and with such powers as are specifically delegated to the Paying Agent by the terms of this Agreement, together with such
other powers as are reasonably incidental thereto. Any and all money received and held by the Paying Agent under this Agreement or the Deposit Agreement shall be held in the Paying Agent Account for the benefit of the Investors. The Paying Agent
(which term as used in this sentence shall include reference to its affiliates and its own and its affiliates’ officers, directors, employees and agents): (a) shall have no duties or responsibilities except those expressly set forth in
this Agreement, and shall not by reason of this Agreement be a trustee for the Escrow Agent; (b) shall not be responsible to the Escrow Agent for any recitals, statements, representations or warranties of any person other than itself contained
in this Agreement or for the failure by the Escrow Agent or any other person or entity (other than the Paying Agent) to perform any of its obligations hereunder (whether or not the Paying Agent shall have any knowledge thereof); and (c) except
in respect of its express obligations hereunder, shall not be responsible for any action taken or omitted to be taken by it hereunder or provided for herein or in connection herewith, except for its own willful misconduct or gross negligence (or
simple negligence in connection with the handling of funds actually received by it in accordance with the terms of this Agreement). 
 2.02.      Establishment of Paying Agent Account.  The Paying Agent shall establish a deposit account (the “Paying Agent Account”) at Wilmington Trust Company in the name of
the Escrow Agent. It is expressly understood by the parties hereto that the Paying Agent is acting as the paying agent of the Escrow Agent hereunder and that no amounts on deposit in the Paying Agent Account constitute part of the Trust Property.

 2.03.      Payments from Paying Agent Account.  The Escrow Agent hereby
irrevocably instructs the Paying Agent, and the Paying Agent agrees to act, as follows: 
 (a)      Upon the confirmation by the Paying Agent of receipt in the Paying Agent Account from the Depositary of any amount in respect of the Final Withdrawal, the Paying Agent shall forthwith distribute the
entire amount of the Final Withdrawal deposited therein by the Depositary. There shall be so distributed to each Receiptholder of record on the 15th day (whether or not a Business Day) preceding the Final Withdrawal Date by check mailed to such
Receiptholder, at the address appearing in the Register, such Receiptholder’s pro rata share (based on the Escrow Interest in the Account Amounts held by such Receiptholder) of the total amount in the Paying Agent Account on account of such
Final Withdrawal, except that, with respect to Escrow Receipts registered on the Record Date in the name of The Depositary Trust Company “DTC”), such distribution shall be made by wire transfer in immediately available funds to the
account designated by DTC. 
 (b)      If any payment of interest or principal in respect of the
Final Withdrawal is not received by the Paying Agent within five days of the applicable date when due, then it shall be distributed to Receiptholders after actual receipt by the Paying Agent on the same basis as a Special Payment is distributed
under the Pass Through Trust Agreement. 
  

 6 

 
[Escrow and Paying Agent Agreement (Class A)] 
  

 (c)      The Paying Agent shall include with any check
mailed pursuant to this Section any notice required to be distributed under the Pass Through Trust Agreement that is furnished to the Paying Agent by the Pass Through Trustee. 
 2.04.      Withholding Taxes.  The Paying Agent shall exclude and withhold from each
distribution of accrued interest on the Deposits (as defined in the Deposit Agreement) and any amount in respect of the Final Withdrawal any and all withholding taxes applicable thereto as required by law. The Paying Agent agrees to act as such
withholding agent and, in connection therewith, whenever any present or future taxes or similar charges are required to be withheld with respect to any amounts payable in respect of the Deposits (as defined in the Deposit Agreement) or the escrow
amounts, to withhold such amounts and timely pay the same to the appropriate authority in the name of and on behalf of the Receiptholders, that it will file any necessary withholding tax returns or statements when due, and that, as promptly as
possible after the payment thereof, it will deliver to each such Receiptholder appropriate documentation showing the payment thereof, together with such additional documentary evidence as such Receiptholder may reasonably request from time to time.
The Paying Agent agrees to file any other information reports as it may be required to file under United States law. 
 2.05.      Resignation or Removal of Paying Agent.  Subject to the appointment and acceptance of a successor Paying Agent as provided below, the Paying Agent may resign at any time by giving 30
days’ prior written notice thereof to the Escrow Agent, but may not otherwise be removed except for cause by the Escrow Agent. Upon any such resignation or removal, the Escrow Agent shall have the right to appoint a successor Paying Agent. If
no successor Paying Agent shall have been so appointed and shall have accepted such appointment within 30 days after the retiring Paying Agent’s giving of notice of resignation or the removal of the retiring Paying Agent, then the retiring
Paying Agent may appoint a successor Paying Agent. Any successor Paying Agent shall be a bank which has an office in the United States with a combined capital and surplus of at least $100,000,000. Upon the acceptance of any appointment as Paying
Agent hereunder by a successor Paying Agent, such successor Paying Agent shall enter into such documents as the Escrow Agent shall require and shall thereupon succeed to and become vested with all the rights, powers, privileges and duties of the
retiring Paying Agent, and the retiring Paying Agent shall be discharged from its duties and obligations hereunder. 
 2.06.      Notice of Final Withdrawal.  Promptly after receipt by the Paying Agent of notice that the Escrow Agent has requested a Final Withdrawal or that a Final Withdrawal will be made, the
Paying Agent shall cause notice of the distribution of such Final Withdrawal to be mailed to each of the Receiptholders at its address as it appears in the Register. Such notice shall be mailed not less than 15 days prior to the Final Withdrawal
Date. Such notice shall set forth: 
 (i)      the Final Withdrawal Date and the
date for determining Receiptholders of record who shall be entitled to receive distributions in respect of such Final Withdrawal, 
 (ii)      the amount of the payment in respect of such Final Withdrawal for each $1,000 face amount Certificate (based on information provided by the Pass Through Trustee)
and the amount thereof constituting unused Deposits (as defined in the Deposit Agreement) and interest thereon, and 
  

 7 

 
[Escrow and Paying Agent Agreement (Class A)] 
  

 (iii)      if the Final Withdrawal Date
is the same date as a Regular Distribution Date, the total amount to be received on such date for each $1,000 face amount Certificate (based on information provided by the Pass Through Trustee). 
 Such mailing may include any notice required to be given to Certificateholders in connection with such distribution pursuant to the Pass
Through Trust Agreement. 
 Section 3.      Payments.  If, notwithstanding
the instructions in Section 4 of the Deposit Agreement that all amounts payable to the Escrow Agent under the Deposit Agreement be paid by the Depositary directly to the Paying Agent or the Pass Through Trustee or a Replacement Depositary
(depending on the circumstances), the Escrow Agent receives any payment thereunder, then the Escrow Agent shall forthwith pay such amount in Dollars and in immediately available funds by wire transfer to (a) in the case of any Final Withdrawal,
directly to the Paying Agent Account, (b) in the case of any Financing Withdrawal, directly to the Pass Through Trustee or its designee as specified and in the manner provided in the Applicable Notice of Financing Withdrawal and (c) in the
case of any Replacement Withdrawal, to the Replacement Depositary as provided in the Replacement Depositary Agreement. The Escrow Agent hereby waives any and all rights of set-off, combination of accounts, right of retention or similar right
(whether arising under applicable law, contract or otherwise) it may have against amounts payable to the Paying Agent howsoever arising. 
 Section 4.      Other Actions.  The Escrow Agent shall take such other actions under or in respect of the Deposit Agreement (including, without
limitation, the enforcement of the obligations of the Depositary thereunder) as the Investors, by an Action of Investors, may from time to time request. 
 Section 5.      Representations and Warranties of the Escrow Agent.  The Escrow Agent represents and warrants to United, the Investors, the Paying
Agent and the Pass Through Trustee as follows: 
 (i)      it is a banking
corporation duly organized and validly existing in good standing under the laws of the State of Delaware; 
 (ii)     it has full power, authority and legal right to conduct its business and operations as currently conducted and to enter into and perform its obligations under this Agreement, the Deposit Agreement and any
Replacement Deposit Agreement; 
 (iii)    the execution, delivery and performance of each
of this Agreement, the Deposit Agreement and any Replacement Deposit Agreement have been duly authorized by all necessary corporate action on the part of it and do not require any stockholder approval, or approval or consent of any trustee or holder
of any indebtedness or obligations of it, and each such document (other than a Replacement Deposit Agreement) has been duly executed and delivered by it and constitutes its legal, valid and binding obligations enforceable against it in accordance
with the terms hereof or thereof except as such enforceability may be limited by bankruptcy, insolvency, moratorium, reorganization or other similar laws or equitable principles of general application to or affecting the enforcement of
creditors’ rights generally (regardless of whether such enforceability is considered in a proceeding in equity or at law); 
  

 8 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 (iv)      no authorization, consent or
approval of or other action by, and no notice to or filing with, any United States federal or state of Delaware governmental authority or regulatory body is required for the execution, delivery or performance by it of this Agreement or the Deposit
Agreement or any Replacement Deposit Agreement; 
 (v)      neither the
execution, delivery or performance by it of this Agreement or the Deposit Agreement or any Replacement Deposit Agreement, nor compliance with the terms and provisions hereof or thereof, conflicts or will conflict with or results or will result in a
breach or violation of any of the terms, conditions or provisions of, or will require any consent or approval under, any law, governmental rule or regulation or the charter documents, as amended, or bylaws, as amended, of it or any similar
instrument binding on it or any order, writ, injunction or decree of any court or governmental authority against it or by which it or any of its properties is bound or any indenture, mortgage or contract or other agreement or instrument to which it
is a party or by which it or any of its properties is bound, or constitutes or will constitute a default thereunder or results or will result in the imposition of any lien upon any of its properties; and 
 (vi)      there are no pending or, to its knowledge, threatened actions, suits,
investigations or proceedings (whether or not purportedly on behalf of it) against or affecting it or any of its property before or by any court or administrative agency which, if adversely determined, (A) would adversely affect the ability of
it to perform its obligations under this Agreement or the Deposit Agreement or any Replacement Deposit Agreement or (B) would call into question or challenge the validity of this Agreement or the Deposit Agreement or the enforceability hereof
or thereof in accordance with the terms hereof or thereof, nor is the Escrow Agent in default with respect to any order of any court, governmental authority, arbitration board or administrative agency so as to adversely affect its ability to perform
its obligations under this Agreement or the Deposit Agreement. 
 Section
6.      Representations and Warranties of the Paying Agent.  The Paying Agent represents and warrants to United, the Investors, the Escrow Agent and the Pass Through Trustee as follows: 

(i)      it is a banking corporation duly organized and validly existing in good standing
under the laws of the State of Delaware; 
 (ii)     it has full power, authority and
legal right to conduct its business and operations as currently conducted and to enter into and perform its obligations under this Agreement; 
 (iii)    the execution, delivery and performance of this Agreement has been duly authorized by all necessary corporate action on the part of it and does not require any stockholder
approval, or approval or consent of any trustee or holder of any indebtedness or obligations of it, and such

  

 9 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 
document has been duly executed and delivered by it and constitutes its legal, valid and binding obligations enforceable against it in accordance with the terms hereof except as such
enforceability may be limited by bankruptcy, insolvency, moratorium, reorganization or other similar laws or equitable principles of general application to or affecting the enforcement of creditors’ rights generally (regardless of whether such
enforceability is considered in a proceeding in equity or at law); 
 (iv)      no authorization, consent or approval of or other action by, and no notice to or filing with, any United States federal or state of Delaware governmental authority or regulatory body is required for
the execution, delivery or performance by it of this Agreement; 
 (v)       neither the execution, delivery or performance by it of this Agreement, nor compliance with the terms and provisions hereof, conflicts or will conflict with or results or will result in a breach
or violation of any of the terms, conditions or provisions of, or will require any consent or approval under, any law, governmental rule or regulation or the charter documents, as amended, or bylaws, as amended, of it or any similar instrument
binding on it or any order, writ, injunction or decree of any court or governmental authority against it or by which it or any of its properties is bound or any indenture, mortgage or contract or other agreement or instrument to which it is a party
or by which it or any of its properties is bound, or constitutes or will constitute a default thereunder or results or will result in the imposition of any lien upon any of its properties; and 
 (vi)      there are no pending or, to its knowledge, threatened actions, suits,
investigations or proceedings (whether or not purportedly on behalf of it) against or affecting it or any of its property before or by any court or administrative agency which, if adversely determined, (A) would adversely affect the ability of
it to perform its obligations under this Agreement or (B) would call into question or challenge the validity of this Agreement or the enforceability hereof in accordance with the terms hereof, nor is the Paying Agent in default with respect to
any order of any court, governmental authority, arbitration board or administrative agency so as to adversely affect its ability to perform its obligations under this Agreement. 
 Section 7.      Indemnification.  Except for actions expressly required of the Escrow
Agent or the Paying Agent hereunder, each of the Escrow Agent and the Paying Agent shall in all cases be fully justified in failing or refusing to act hereunder unless it shall have been indemnified (both in such capacities and individually) by the
party requesting such action in a manner reasonably satisfactory to it against any and all liability and expense which may be incurred by it by reason of taking or continuing to take any such action. In the event United requests any amendment to any
Operative Agreement (as defined in the Note Purchase Agreement), the Pass Through Trustee agrees to pay all reasonable fees and expenses (including, without limitation, fees and disbursements of counsel) of the Escrow Agent and the Paying Agent in
connection therewith. 
  

 10 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 Section 8.      Amendment,
Etc.  Upon request of the Pass Through Trustee and approval by an Action of Investors, the Escrow Agent and Paying Agent shall enter into an amendment to this Agreement, so long as such amendment does not adversely affect the rights or
obligations of the Escrow Agent or the Paying Agent, provided that upon request of the Pass Through Trustee and without any consent of the Investors, the Escrow Agent and Paying Agent shall enter into an amendment to this Agreement for any of
the following purposes: 
 (1)      to correct or supplement any provision in
this Agreement which may be defective or inconsistent with any other provision herein or to cure any ambiguity or correct any mistake or to modify any other provision with respect to matters or questions arising under this Agreement, provided
that any such action shall not materially adversely affect the interests of the Investors; or 
 (2)      to comply with any requirement of the SEC, applicable law, rules or regulations of any exchange or quotation system on which the Certificates are listed or any regulatory body; or 
 (3)      to evidence and provide for the acceptance of appointment under this Agreement of a
successor Escrow Agent, successor Paying Agent or successor Pass Through Trustee. 
 Section
9.      Notices.  Unless otherwise expressly provided herein, any notice or other communication under this Agreement shall be in writing (including by facsimile) and shall be deemed to be given and
effective upon receipt thereof (or, if received outside of business hours, at the opening of business on the next Business Day). All notices shall be sent to (a) in the case of the Investors, as their respective addresses shall appear in the
Register, (b) in the case of the Escrow Agent, Wilmington Trust Company, 1100 North Market Street, Wilmington, Delaware 19890-0001, Attention: Corporate Capital Market Services (Telecopier: 302-636-4140), (c) in the case of the Pass
Through Trustee, Wilmington Trust Company, 1100 North Market Street, Wilmington, Delaware 19890-0001, Attention: Corporate Capital Market Services (Telecopier: 302-636-4140), or (d) in the case of the Paying Agent, Wilmington Trust Company,
1100 North Market Street, Wilmington, Delaware 19890-0001, Attention: Corporate Capital Market Services (Telecopier: 302-636-4140), in each case with a copy to United, United Air Lines, Inc., 77 West Wacker Drive, Chicago, IL 60601, Attention:
Stephen R. Lieberman, Vice President and Treasurer (Telecopier: 312-997-8333) with a copy to: United Air Lines, Inc., 77 West Wacker Drive, Chicago, IL 60601, Attention: Paul R. Lovejoy, Senior Vice President, General Counsel and Secretary
(Telecopier: 312-997-8333) (or at such other address as any such party may specify from time to time in a written notice to the other parties). On or prior to the execution of this Agreement, the Pass Through Trustee has delivered to the Escrow
Agent a certificate containing specimen signatures of the representatives of the Pass Through Trustee who are authorized to give notices and instructions with respect to this Agreement. The Escrow Agent may conclusively rely on such certificate
until the Escrow Agent receives written notice from the Pass Through Trustee to the contrary. 
 The Escrow Agent shall notify
the Receiptholders in the event of a default in the payment of any Final Withdrawal in accordance with the terms of the Deposit Agreement and this Agreement and shall promptly forward to Receiptholders upon receipt copies of all written
communications relating to any payments due to the Receiptholders in respect of the Deposits. 
  

 11 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 Section 10.      Transfer.  No
party hereto shall be entitled to assign or otherwise transfer this Agreement (or any interest herein) other than (in the case of the Escrow Agent) to a successor escrow agent under Section 1.07 hereof or (in the case of the Paying Agent) to a
successor paying agent under Section 2.05 hereof, and any purported assignment in violation thereof shall be void. This Agreement shall be binding upon the parties hereto and their respective successors and (in the case of the Escrow Agent and
the Paying Agent) their respective permitted assigns. Upon the occurrence of the Transfer (as defined below) contemplated by the Assignment and Assumption Agreement (as defined below), the Pass Through Trustee shall (without further act) be deemed
to have transferred all of its right, title and interest in and to this Agreement to the trustee of the Successor Trust (as defined below) and, thereafter, the trustee of the Successor Trust shall be deemed to be the “Pass Through
Trustee” hereunder with the rights and obligations of the “Pass Through Trustee” hereunder and each reference herein to “United Air Lines Pass Through Trust “2009-1A-O” shall be deemed to be a reference to
“United Air Lines Pass Through Trust 2009-1A-S”. The parties hereto hereby acknowledge and consent to the Transfer contemplated by the Assignment and Assumption Agreement. As used herein, “Transfer” means the transfers of
the assets to the Successor Trust contemplated by the Assignment and Assumption Agreement; “Assignment and Assumption Agreement” means the Assignment and Assumption Agreement to be entered into between the Pass Through Trustee and
the trustee of the Successor Trust; “Successor Trust” means the United Air Lines Pass Through Trust 2009-1A-S. 
 Section 11.      Entire Agreement.  This Agreement sets forth all of the promises, covenants, agreements, conditions and understandings among the Escrow Agent, the Paying Agent, the
Underwriters and the Pass Through Trustee with respect to the subject matter hereof, and supersedes all prior and contemporaneous agreements and undertakings, inducements or conditions, express or implied, oral or written. 
 Section 12.      Governing Law.  This Agreement shall be governed by, and construed in
accordance with, the laws of the State of New York (without regard to principles of conflicts of laws thereof (other than Section 5-1401 and Section 5-1402 of the New York General Obligations Law)). 
 Section 13.      Waiver of Jury Trial Right.  EACH OF THE ESCROW AGENT, THE PAYING
AGENT, THE INVESTORS AND THE PASS THROUGH TRUSTEE ACKNOWLEDGES AND ACCEPTS THAT IN ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT SUCH PARTY IRREVOCABLY WAIVES ITS RIGHT TO A TRIAL BY JURY. 
 Section 14.      Counterparts.  This Agreement may be executed in one or more
counterparts, all of which taken together shall constitute one instrument. 
 Section
15.      Rights of Holders.  Each Receiptholder shall have the right (individually and without the need for any other action of any Person, including the Escrow Agent or any other Receiptholder),
upon any default in the payment of the Final Withdrawal when due by the Depositary in accordance with the terms of the

  

 12 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 
Deposit Agreement and this Agreement, (i) to proceed directly against the Depositary by making a demand to the Depositary for the portion of such payment that would have been distributed to
such Receiptholder pursuant to this Agreement or by bringing suit to enforce payment of such portion and (ii) to enforce any other rights that the Escrow Agent may have in respect of amounts due from the Depositary under the Deposit
Agreement and this Agreement that would have been distributed to such Receiptholder pursuant to this Agreement. Any recovery on such enforcement action shall belong solely to the Receiptholder who brought such action, and not to the Escrow
Agent or any other Receiptholder individually or to Receiptholders as a group. 
 *    *    * 
  

 13 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 IN WITNESS WHEREOF, the Escrow Agent, the Paying Agent, the Underwriters and the
Pass Through Trustee have caused this Escrow and Paying Agent Agreement (Class A) to be duly executed as of the day and year first above written. 
  

			
	WILMINGTON TRUST COMPANY, as Escrow Agent
		
	By.	 	  

			
	Name:	 	
	Title:	 	

			
	
	MORGAN STANLEY & CO. INCORPORATED, J.P. MORGAN SECURITIES INC. and GOLDMAN, SACHS & CO., as
Underwriters
		
	By:	 	  

			
	Name:	 	
	Title:	 	

			
		
	By:	 	  

			
	Name:	 	
	Title:	 	

			
		
	By:	 	  

			
		 	(Goldman, Sachs & Co.)
	
	WILMINGTON TRUST COMPANY, not in its individual capacity, but solely as Pass Through Trustee for and on behalf of United Air Lines Pass Through Trust 2009-1A-O

		
	By:	 	  

			
	Name:	 	
	Title:	 	

			
	
	WILMINGTON TRUST COMPANY, as Paying Agent
		
	By:	 	  

			
	Name:	 	
	Title:	 	

  

 14 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 EXHIBIT A 
 UNITED AIR LINES 2009-1A-O ESCROW RECEIPT 
 No.         
 This Escrow Receipt evidences a fractional undivided
interest in amounts (“Account Amounts”) from time to time deposited into a certain paying agent account (the “Paying Agent Account”) described in the Escrow and Paying Agent Agreement (Class A) dated as of
October 13, 2009 (as amended, modified or supplemented from time to time, the “Escrow and Paying Agent Agreement”) among Wilmington Trust Company, as Escrow Agent (in such capacity, together with its successors in such
capacity, the “Escrow Agent”), Morgan Stanley & Co. Incorporated, J.P. Morgan Securities Inc. and Goldman, Sachs & Co., as Underwriters, Wilmington Trust Company, as Pass Through Trustee (in such capacity, together
with its successors in such capacity, the “Pass Through Trustee”) and Wilmington Trust Company, as paying agent (in such capacity, together with its successors in such capacity, the “Paying Agent”). Capitalized
terms not defined herein shall have the meanings assigned to them in the Escrow and Paying Agent Agreement. 
 This Escrow
Receipt is issued under and is subject to the terms, provisions and conditions of the Escrow and Paying Agent Agreement. By virtue of its acceptance hereof the holder of this Escrow Receipt assents and agrees to be bound by the provisions of the
Escrow and Paying Agent Agreement and this Escrow Receipt. 
 This Escrow Receipt represents a fractional undivided interest in
amounts deposited from time to time in the Paying Agent Account, and grants or represents no rights, benefits or interests of any kind in respect of any assets or property other than such amounts. This Escrow Receipt evidences the same percentage
interest in the Account Amounts as the Fractional Undivided Interest in the Pass Through Trust evidenced by the Certificate to which this Escrow Receipt is affixed. 
 All payments and distributions made to Receiptholders in respect of the Escrow Receipt shall be made only from Account Amounts deposited in the Paying Agent Account. The holder of this Escrow Receipt, by
its acceptance of this Escrow Receipt, agrees that it will look solely to the Account Amounts for any payment or distribution due to it pursuant to this Escrow Receipt (or, in case the Depositary shall default in its obligation to make a payment
under the Deposit Agreement that would be an Account Amount, to the Depositary) and that it will not have any recourse to United, the Pass Through Trustee, the Paying Agent or the Escrow Agent, except as expressly provided herein or in the Pass
Through Trust Agreement. No Receiptholder of this Escrow Receipt shall have any right to vote or in any manner otherwise control the operation and management of the Paying Agent Account, nor shall anything set forth herein, or contained in the terms
of this Escrow Receipt, be construed so as to constitute the Receiptholders from time to time as partners or members of an association. 
 This Escrow Receipt may not be assigned or transferred except in connection with the assignment or transfer of the Certificate to which this Escrow Receipt is affixed. After payment to the holder hereof
of its Escrow Interest in the Final Distribution, upon the request of the Pass Through Trustee, the holder hereof will return this Escrow Receipt to the Pass Through Trustee. 
  

 EXHIBIT A 
 Page 1 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 The Paying Agent may treat the person in whose name the Certificate to which this Escrow
Receipt is attached as the owner hereof for all purposes, and the Paying Agent shall not be affected by any notice to the contrary. 
 THIS ESCROW RECEIPT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK (WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAWS THEREOF (OTHER THAN SECTION 5-1401 AND 5-1402 OF THE NEW YORK GENERAL OBLIGATIONS
LAW)). 
 *    *    * 
  

 EXHIBIT A 
 Page 2 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 IN WITNESS WHEREOF, the Escrow Agent has caused this Escrow Receipt to be duly
executed. 
 Dated:                     ,
2009 
  

			
	WILMINGTON TRUST COMPANY, as Escrow Agent
		
	By:	 	  

			
	Name:	 	
	Title:	 	

  

 EXHIBIT A 
 Page 3 

 [Escrow and Paying Agent Agreement (Class A)] 
  

 EXHIBIT B 
 WITHDRAWAL CERTIFICATE 
 (Class A) 
 WILMINGTON TRUST COMPANY, 
 as Escrow Agent 
 Dear Sirs: 
 Reference is made to the Escrow and Paying Agent Agreement, dated as of October 13, 2009 (the “Agreement”). [We hereby
certify to you that the conditions to the obligations of the undersigned to execute a Participation Agreement pursuant to the Note Purchase Agreement have been satisfied] [We hereby notify you that the Depositary is being replaced in accordance with
Section 4(a)(iii) of the Note Purchase Agreement]. Pursuant to Section 1.02(c) of the Agreement, please execute the attached Notice of Financing Withdrawal [Notice of Replacement Withdrawal] and immediately transmit by facsimile to the
Depositary, at [            ], Attention: [            ] – Americas. 
  

			
	Very truly yours,
	
	WILMINGTON TRUST COMPANY, not in its individual capacity but solely as Pass Through Trustee
		
	By:	 	  

			
	Name:	 	
	Title:	 	

 Dated:
                    , 200     
  

 EXHIBIT B 
 Page 1

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