Exhibit 4.21




Exhibit 4.21




Amendment No. 1 to Contract No. ILSB-1006-4488

Contract for Launch Services between ILS International Launch Services, Inc. and

Satelites Mexicanos, S.A. DE C.V.



          This Amendment No. 1 (“Amendment”) to Contract for Launch Services is made and effective as of
the 19th day of January 2011 by and between ILS International Launch Services, Inc., a
Delaware corporation, with a place of business at 1875 Explorer Street, Suite 700, Reston, Virginia
20190, USA (“Contractor”) and Satélites Mexicanos, S.A. de C.V. , a company organized under the
laws of United States of Mexico (Mexico), having its principal place of business at Av. Paseo de la
Reforma No. 222, Torre de Oficinas, Piso 20, Colonia Juárez, Delegación Cuauhtémoc, C.P. 06600,
México, Distrito Federal, México, D.F. México (“Customer”).



          WHEREAS, Contractor and Customer entered into a Contract for Launch Services dated as of
December 23, 2010, Contract No. ILSB-1006-4488; and



          WHEREAS, Contractor and Customer do hereby amend the Contract as set forth in this Amendment
No. 1.



          NOW THEREFORE, in consideration of the mutual covenants herein contained, and other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Contractor
and Customer do hereby amend the Contract, effective as of the date hereof, as follows:




	1.	 	All capitalized terms used but not otherwise expressly defined herein, shall have the
meanings ascribed to them in the Contract.
	 
	2.	 	Paragraph 9.1 is amended to change the name of Contractor’s Mission Manager and is hereby
replaced with the following Paragraph 9.1:




Mission Managers. Each Party hereby identifies to the other a single Mission Manager to
coordinate the activities under this Contract. The Mission Managers of each Contractor and Customer
are not authorized to direct work contrary to the requirements of this Contract or make
modifications to this Contract.




	 	 	 
	Contractor’s Mission Manager	 	Customer’s Mission Manager
	Name: Russ Prytula,

	 	Name: Jesus Gutierrez,
	           Program Director

	 	          Director of Engineering
	Telephone: 571.633.7468

	 	Telephone: 52-55 5804 7338
	Telefax: 571.633.7500

	 	Telefax: 52-55 5804 7304
	Email: r.prytula@ilslaunch.com

	 	Email: jesus.gutierrez@satmex.com






ILS International Launch Services PROPRIETARY INFORMATION




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Parties agree that further modifications to its named Mission Manager shall become effective by
giving notification in writing to the other Party within the following ten (10) days of such
modification took place, pursuant to Section 9.2, entitled “Notices”.





	3.	 	Except as expressly modified by this Amendment No. 1, the Contract shall remain in full
force and effect in accordance with its terms and conditions.





     IN WITNESS WHEREOF, the parties have caused this Amendment to be executed by their duly
authorized representatives as of the date and year first above written:



	 	 	 	 	 	 	 	 	 

	For Customer	 	For Contractor
	Satelites Mexicanos, S.A. de C.V.	 	ILS International Launch Services, Inc.
	 
	 	 	 	 	 	 	 	 
	Signature:

	 	/s/ Patricio Northland
 

	 	Signature:
	 	/s/ Carl J. Holub
 

	 	 
	 
	Name:

	 	Patricio Northland
	 	Name:
	 	Carl J. Holub	 	 
	 
	 	 	 	 	 	 	 	 
	Title:

	 	CEO & Director General
	 	Title:
	 	Director of Contracts	 	 
	 
	 	 	 	 	 	 	 	 
	Date:

	 	Jan 20th, 2011
	 	Date:
	 	20 January 2011	 	 






ILS International Launch Services PROPRIETARY INFORMATION




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