EXHIBIT 10.4



 Exhibit 10.4 
  
 AMENDMENT NUMBER 3 TO PURCHASE AGREEMENT DCT-021/03 
  
 This Amendment Number 3 to Purchase Agreement DCT-021/03, dated as of
February 09, 2004 (“Amendment No. 3”) relates to the Purchase Agreement Number DCT-021/03 between EMBRAER-Empresa Brasileira de Aeronáutica S.A. (“Embraer”) and US Airways Group, Inc. (“Buyer”) dated May
9th, 2003 (as amended, the “Purchase Agreement”), Buyer and Embraer are collectively referred to herein as
the “Parties”. Except as otherwise defined herein, all capitalized terms used herein shall have the meanings set forth or referred to in the Purchase Agreement or in the Letter Agreement DCT-022/03 dated as of May 9th, 2003 (as amended, the “Letter Agreement”). 
  
 This Amendment No. 3 sets forth the further agreement between Embraer and Buyer relative to, among other things, ***.

  
 NOW, THEREFORE, in consideration of the foregoing, Embraer and
Buyer do hereby agree as follows: 
  

	1.	*** 

  
 ***: 
  
 [Intentionally left blank]

  

 Page 1 of 3 
 Amendment No. 3 to Purchase 
 Agreement DCT-021/03 









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

  

	2.	EFFECT UPON PURCHASE AGREEMENT 

  
 All terms and conditions of the Purchase Agreement that have not been specifically and expressly altered or modified hereunder shall remain in full force
and effect. In the event any conflict exists between the terms of the Purchase Agreement and the terms of this Amendment No. 3, the terms of this Amendment No. 3 shall control. 
  

 Page 2 of 3 
 Amendment No. 3 to Purchase 
 Agreement DCT-021/03 









	3.	COUNTERPARTS 

  
 This Amendment No. 3 may be executed by the Parties in any number of counterparts with the same effect as if the signatures thereto and hereto were upon
the same instrument and all of which when taken together shall constitute one and the same instrument. 
  
 IN WITNESS WHEREOF, the Parties have caused this Amendment No. 3 to be duly executed and delivered by their proper and duly authorized officers and to be effective as of the day and year first above written.

  

									
	 US AIRWAYS GROUP, INC.
  
	 	 	 	 EMBRAER – EMPRESA BRASILEIRA DE AERONÁUTICA S.A.
  

					
	By:	 	/s/    Eilif Serck-Hanssen        	 	 	 	By:	 	/s/    Frederico Fleury Curado        
	 	 	
	 	 	 	 	 	

	 Name:
	 	Eilif Serck-Hanssen	 	 	 	 Name:
	 	Frederico Fleury Curado
	 	 	
	 	 	 	 	 	

	 Title:
	 	VP– Finance & Treasurer	 	 	 	 Title:
	 	Executive Vice President—Civil Aircraft
	 	 	
	 	 	 	 	 	


  
  

									
					
	 	 	 	 	 	 	By:	 	/s/    Flavio Rimoli      
	 	 	 	 	 	 	 	 	

	 	 	 	 	 	 	 Name:
	 	Flavio Rimoli
	 	 	 	 	 	 	 	 	

	 	 	 	 	 	 	 Title:
	 	Sr. Vice President—Airline Market
	 	 	 	 	 	 	 	 	


  
  

									
	 Witness:
	 	 /s/    Ross L. Cotjanle        
	 	 	 	 Witness:
	 	 /s/    Hilario M. Oliveira

	 	 	
	 	 	 	 	 	

	 Name:
	 	Ross L. Cotjanle	 	 	 	 Name:
	 	Hilario M. Oliveira
	 	 	
	 	 	 	 	 	


  
  

									
	 Date:
	 	 February 9, 2004
	 	 	 	 Date:
	 	 February 11, 2004

	 Place:
	 	 Arlington, VA
	 	 	 	 Place:
	 	 Sao Jose Dos Campos, SP Brazil


  

 Page 3 of 3 
 Amendment No. 3 to Purchase 
 Agreement DCT-021/03