Exhibit 10.3**AMENDMENT NO. 1 TO AMENDED AND RESTATED****LETTER AGREEMENT DCT-022/03**This Amendment No. 1 to Amended and Restated Letter Agreement DCT-022/03***,***dated as of August15th, 2007 (“Amendment No. 1”) relates to the Amended and Restated Letter AgreementDCT-022/03 (the “Letter Agreement”) between Embraer — Empresa Brasileira de Aeronáutica S.A.(“Embraer”) and US Airways Group, Inc. (“Buyer”) dated June 13, 2006 as amended from time to time(collectively referred to herein as “Agreement”). This Amendment No. 1 is between Embraer andBuyer, collectively referred to herein as the “Parties”.This Amendment No. 1 sets forth additional agreements between Embraer and Buyer with respect to thematters set forth herein.Except as otherwise provided for herein, all terms of the Letter Agreement shall remain in fullforce and effect. All capitalized terms used in this Amendment No. 1, which are not defined hereinshall have the meaning given in the Letter Agreement. In the event of any conflict between thisAmendment No. 1 and the Letter Agreement the terms, conditions and provisions of this Amendment No.1 shall control.**WHEREAS**, Embraer and Buyer entered into the Amended and Restated Purchase Agreement DCT — 021/03dated June 13, 2006 (“Purchase Agreement”) and further entered into Amendment No. 2 to the PurchaseAgreement on June 6th,2007 (“Amendment 2 to Purchase Agreement”);**WHEREAS**, pursuant to Amendment 2 to Purchase Agreement, Embraer granted to Buyer the right undervarious circumstances to acquire an additional one hundred and forty (140) Option Aircraft inconnection with Buyer’s desire to reinstate its total aircraft options order from the originalpurchase agreement executed by the Parties, Purchase Agreement DCT 021/03 dated May 9, 2003, and assuch, increase by one hundred and forty (140) aircraft the total number of Option Aircraftavailable under the Purchase Agreement; and**WHEREAS**, in connection with Amendment 2 to Purchase Agreement, Embraer and Buyer agree to enterinto certain amendments and modifications to the Letter Agreement;**NOW, THEREFORE**, for good and valuable consideration which is hereby acknowledged Embraer and Buyerhereby agree as follows:**1.** **Aircraft Price Escalation **:**   The fourth line of Article 3.1 shall be deleted and replaced as follows:   “For Option Aircraft ** and for Option Aircraft **.” **2.** **Regional Carrier Assignment**   Article 23 shall be deleted in its entirety and replaced as follows: ** Confidential treatment requested.
 

 
Notwithstanding the terms of Articles 14 and 21 of the Purchase Agreement, Buyer may assignto Republic or any other US certificated airline approved by Embraer (such approval not tobe unreasonably withheld) (collectively referred to as “Regional Airline”) the purchaserights for the Initial Aircraft and Additional Aircraft so that such Regional Airline mayoperate such Initial Aircraft and Additional Aircraft for Buyer pursuant to a jet servicesagreement executed by Buyer. For avoidance of doubt, Buyer shall not assign any rightsunder the Second Amended and Restated Financing Letter of Agreement DCT-023/03 regarding anyAircraft and the purchase of such Aircraft by the Regional Airline or Republic shall besubject to terms and conditions agreed to between Embraer and such Regional Airline orRepublic.**3.** **Miscellaneous**   All other terms and conditions of the Letter Agreement, which are not specifically amendedor modified by this Amendment No. 1, shall remain in full force and effect without anychange.[Signature page follows]
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IN WITNESS WHEREOF, EMBRAER and BUYER, by their duly authorized officers, have entered into andexecuted this Amendment No. 1 to Letter Agreement to be effective as of the date first writtenabove.               EMBRAER — Empresa Brasileire deAeronáutica S.A.   US Airways Group, Inc.                 By       By: /s/ Thomas T. Weir               Name:       Name: Thomas T. Weir    Title:       Title: Vice President and Treasurer                 By       Date: 8/15/07                 Name:     Place: Tempe, Arizona USA    Title:            Date:            Place:                           Witness:       Witness: /s/ Ann F. Halton               Name:       Name: Ann F. Halton                 
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