EX-10.3: AMENDMENT NO.6 TO EMBRAER LETTER AGREEMENT

Exhibit 10.3

Execution Copy

AMENDMENT No. 6 TO LETTER OF AGREEMENT DCT-026/2003

This Amendment No. 6 to Letter of Agreement DCT-026/2003, dated as of July 18, 2008 (“Amendment 6”) relates to Letter Agreement DCT-026/2003 between Embraer — Empresa Brasileira de Aeronáutica S.A. (“Embraer”) and JetBlue Airways Corporation (“Buyer”) dated June 9, 2003 as amended from time to time (collectively referred to herein as “Letter Agreement”). This Amendment 6 is between Embraer and Buyer, collectively referred to herein as the “Parties”.

This Amendment 6 sets forth the further agreement between Embraer and Buyer relative to changes to Articles 4 and 7 of the Letter Agreement. All capitalized terms used in this Amendment 6 and not defined herein shall have the meaning given in the Purchase Agreement, and in case of any conflict between this Amendment 6 and the Letter Agreement, the terms of this Amendment 6 shall control.

Now, therefore, for good and valuable consideration, which is hereby acknowledged, Embraer and Buyer hereby agree as follows:

1. Changes to Article 4 of Letter Agreement

1.1 In the third line of the first paragraph of Article 4.a. of the Letter Agreement the words [***] shall be deleted and replaced by [***].

1.2 Article 4.d of the Letter Agreement shall be deleted and replaced as follows:

“d. [***]

2. Changes to Article 7 of Letter Agreement

A new item 7.1 shall be added at the end of Article 7 to the Letter Agreement as follows:

“7.1 [***]

All other terms and conditions of the Letter Agreement, which are not specifically amended by this Amendment 6, shall remain in full force and effect without any change.

[Signature page follows]

IN WITNESS WHEREOF, Embraer and Buyer, by their duly authorized officers, have entered into and executed this Amendment 6 to the Letter Agreement to be effective as of the date first written above.

Embraer — Empresa Brasileira de Aeronáutica S.A.						JetBlue Airways Corporation
By:		/s/ Artur Coutinho				By:		/s/ Mark D. Powers
Name:		Artur Coutinho				Name:		Mark D. Powers
Title:		Executive Vice President of Industrial Operations				Title:		Senior Vice President and Treasurer
By:		/s/ José Luís D. Molina
Name:		José Luís D. Molina
Title:		Vice President Contracts Airline Market
Date:		July 18, 2008				Date:		July 18, 2008
Place:		São José Dos Campos, Brasil				Place:		Forest Hills, NY USA
Witness:		/s/ Rinaldo Piubeli Prado				Witness:		/s/ Laura King
Name:		Rinaldo Piubeli Prado				Name:		Laura King