Exhibit 4.19
 FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH
RESPECT TO CERTAIN INFORMATION IN THIS AGREEMENT. THIS
INFORMATION HAS BEEN REDACTED AND DENOTED BY ASTERISKS
[***]. COPIES OF THE EXHIBIT CONTAINING THE REDACTED PORTIONS
HAVE BEEN FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION (THE COMMISSION) SUBJECT TO A
REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO
RULE 24B-2 UNDER
THE SECURITIES EXCHANGE ACT.
           SATMEX and SS/L Proprietary




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO
CERTAIN INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN
REDACTED AND DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING
THE REDACTED PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION
SUBJECT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2
UNDER
THE SECURITIES EXCHANGE ACT.
  This CONTRACT AMENDMENT NO. 1
 WHEREAS,
 WHEREAS,
 WHEREAS,
 WHEREAS,
 NOW, THEREFORE,
 A.
    
    Description of Changes to the Contract:1.
    
    Under Exhibit B  Satmex 8 Satellite Technical Specification dated 5/7/2010, delete Exhibit
B in its entirety and replace with the enclosed updated Exhibit B Satmex 8 Satellite
Requirements, Revision 1, dated February 9, 2011.2.
    
    Under Schedule 1  Satmex 8 Milestone Payment Plan for Firm Fixed Price and Termination
Liability Schedule dated 5/7/2010, delete Schedule 1 in its entirety and replace with the
enclosed updated Schedule 1 Satmex 8 Milestone Payment Plan for Firm Fixed Price and
Termination Liability Schedule dated February 9, 2011.3.
    
    Under Article 2  SCOPE OF WORK, delete Paragraphs 2.1.2, 2.1.3, 2.1.8, 2.1.9 and 2.1.10 in
their entirety and replace with the followings:
 2.1.2
    
    Exhibit B, Satmex 8 Satellite Requirements, Revision 1, dated February 9, 2011.2.1.3
    
    Exhibit C, Mission Assurance Plan, Rev. 1, dated 2/22/20102.1.8
    
    Exhibit H, APS Technical Requirements Specification, dated 2/22/20102.1.9
    
    Exhibit I, SATMEX 8 Satellite and Ground Control Equipment and Software Product
Upgrade Assurance Plan, dated 2/22/20102.1.10
    
    Exhibit J, Ground Control Equipment Upgrade Test Plan, dated 4/9/2010
 SATMEX and SS/L Proprietary
 1




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO
CERTAIN INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN
REDACTED AND DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING
THE REDACTED PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION
SUBJECT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2
UNDER
THE SECURITIES EXCHANGE ACT.
  4.
    
    Under Article 4  PRICE, delete Paragraph 4.1 in its entirety and replace with the
following:4.1
    
    Firm Fixed Price
 The price to be paid by Purchaser to Contractor for the Deliverable Items 1 through 10 set
forth in Article 3.1 and Mission Operations Support Services, in each case, within the
scope of work detailed in the SOW, Orbital Performance Incentives and shipment of
Deliverable Items, including shipping insurance and customs and duties associated with
shipment of the Satellite to the designated Launch Site and all in accordance with the
terms and conditions of this Contract, as specified herein, shall be a firm fixed price of
[***] (the Firm Fixed Price), which shall be paid in accordance with Schedule 1 hereto,
entitled SATMEX 8 Milestone Payment Plan for Firm Fixed Price. The Firm Fixed Price
includes the ATP Price paid by Purchaser to Contractor under the ATP, which shall be
credited against the initial payment set forth in Schedule 1 hereto, but does not include
the [***] interest cost calculated based on the Orbital Performance Incentives amount as
described in Article 13. The itemization of the Firm Fixed Price is as follows:
 Item
    
    Description
    
    Amount1.
    
    
    SATMEX 8 Satellite
    
    [***]2.
    
    
    Deliverable Data
    
    NSP3.
    
    
    Training
    
    NSP4.
    
    
    On-Site Support
    
    NSP5.
    
    
    In-Plant Participation
    
    NSP6.
    
    
    Technical Support over the Mission Life
    
    NSP7.
    
    
    Two (2) Dynamic Satellite Simulators (DSSs)
    
    [***]8.
    
    
    Ground Control Equipment Upgrades
    
    [***]9.
    
    
    Launch Support Services (launch base operations)
    
    [***]10
    
    
    Mission Operations Support Services
    
    NSPTotal Firm Fixed Price
    
    [***]
 SATMEX and SS/L Proprietary
 2




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO
CERTAIN INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN
REDACTED AND DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING
THE REDACTED PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION
SUBJECT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2
UNDER
THE SECURITIES EXCHANGE ACT.
  The Firm Fixed Price includes all applicable taxes, duties and similar liabilities imposed
by the United States Government or any political subdivision thereof, in connection with
Contractors performance under this Contract other than taxes imposed on Purchaser as a
result of Purchaser accepting title, ownership or possession of any Deliverable Items under
this Contract. The Firm Fixed Price includes any applicable taxes, duties and similar
liabilities imposed upon Contractors acquisition of items and services from subcontractors
and suppliers in performance of its obligations hereunder.
 5.
    
    Under Article 5  PAYMENTS, delete Paragraph 5.4 in its entirety and replace with the
following:
 5.4
    
    Invoices
 Invoices required to be delivered by Contractor hereunder shall be emailed or faxed to
Purchaser and followed by original plus one (1) copy at the following address:
 
 
 or to such other address as Purchaser may specify in writing to Contractor. A copy of the
invoice shall be sent to [***], phone [***], facsimile [***], email address: [***]; and
[***], phone [***], facsimile [***], email address: [***].The invoice shall contain the following mailing address:
  SATMEX and SS/L Proprietary
 3




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO
CERTAIN INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN
REDACTED AND DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING
THE REDACTED PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION
SUBJECT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2
UNDER
THE SECURITIES EXCHANGE ACT.
   29.1
    
    Written Notification
 Each notice or correspondence required or permitted to be given or made hereunder shall be
in writing (except where oral notice is specifically authorized) to the respective
addresses, facsimile, e-mail and telephone numbers and to the attention of the individuals
set forth below, and any such notice shall be deemed given on the earlier to occur of (i)
actual receipt, irrespective of whether sent by post, facsimile transmission (followed by
mailing of the original copy), overnight courier, e-mail or other method, and (ii) seven
(7) days after mailing by registered or certified mail, return receipt requested, postage
prepaid.
       B.
    
    Status of Contract: Except as expressly amended, the Parties agree that the terms and
conditions of the Contract remain in full force and effect.C.
    
    Counterparts: This Amendment No. 1 may be executed in one or more counterparts, all of which
taken together shall constitute this Amendment No. 1. A facsimile of a signed copy of this
Amendment No. 1 may be relied upon as an original.D.
    
    Integration: This Amendment No. 1, together with the Contract, represents the entire
agreement between Purchaser and Contractor with respect to the purchase, construction and
delivery of the Satmex 8 Satellite, and supersedes all prior agreements, both oral and written
between the Parties, with respect to the subject matter hereof.
 SATMEX and SS/L Proprietary
 4




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO
CERTAIN INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN
REDACTED AND DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING
THE REDACTED PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION
SUBJECT TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2
UNDER
THE SECURITIES EXCHANGE ACT.
  E.
    
    As a result of this Amendment No. 1, the following pages are replaced in the Contract so that
a conformed copy of the Contract may be maintained:
 Replace with Contract PageDelete Contract Page No.
    
    No. (attached hereto)
    
    Description of ChangeExhibit B
    
    Exhibit B Rev. 1 dated 2/9/11
    
    See Item A1 aboveSchedule 1
    
    Schedule 1, dated 2/9/11
    
    See Item A2 above12
    
    12
    
    See Item A3 above16-17
    
    16-17
    
    See Item A4 above21-22
    
    21-22
    
    See Item A5 above92
    
    92
    
    See Item A6 above
 IN WITNESS WHEREOF,
 SPACE SYSTEMS/LORAL, INC.
    
    
    
    SATÉLITES MEXICANOS, S.A. DE C.V.By:
    
    /s/ R. A. Haley
    
    By:
    
    /s/ Patricio E. NorthlandR. A. Haley
    
    
    
    Patricio E. NorthlandSenior Vice President
    
    
    
    CEOFinance & Contracts
    
    
    
    SATMEX
 SATMEX and SS/L Proprietary
 5




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO CERTAIN
INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN REDACTED AND
DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING THE REDACTED
PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION SUBJECT TO A REQUEST 
FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2 UNDER
THE SECURITIES EXCHANGE ACT.
  ARTICLE 2- SCOPE OF WORK
 2.1
    
    Provision of Services and MaterialsContractor shall provide the necessary personnel, expertise, material, services, and
facilities to: design, manufacture, test, and deliver to Purchaser for Acceptance, one (1)
SATMEX 8 Satellite together with all other Deliverable Items referred to in Article 3.1, in
accordance with the following Exhibits, which are attached hereto and made a part hereof:
 2.1.1
    
    Exhibit A  SATMEX 8 Satellite Statement of Work, dated 3/12/ 20102.1.2
    
    Exhibit B  SATMEX 8 Satellite Requirements, Rev. 1, dated 2/9/20112.1.3
    
    Exhibit C  Mission Assurance Plan, Rev. 1, dated 2/22/20102.1.4
    
    Exhibit D  SATMEX 8 Satellite Test Plan, dated 5/7/20102.1.5
    
    Exhibit E  SATMEX 8 Dynamic Satellite Simulator Specification, dated 3/12/20102.1.6
    
    Exhibit F  GCE Upgrade Statement of Work , dated 3/19/20102.1.7
    
    Exhibit G  iTACS Technical Requirements Specification, dated 3/12/ 20102.1.8
    
    Exhibit H  APS Technical Requirements Specification, dated 2/22/20102.1.9
    
    Exhibit I  SATMEX 8 Satellite Ground control Equipment and Software Product
Upgrade Assurance Plan, dated 2/22/20102.1.10
    
    Exhibit J  Ground Control Equipment Upgrade Test Plan, dated 4/9/20102.1.11
    
    Exhibit K  Ground Control Equipment Upgrade Training Plan and Technical Assistance,
dated 3/12/2010
 Use or disclose of the data contained on this page is subject to the restriction set forth in Article 26Satmex 8 Amendment 1
    
    (LORAL LOGO)




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO CERTAIN
INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN REDACTED AND
DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING THE REDACTED
PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION SUBJECT TO A REQUEST 
FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2 UNDER
THE SECURITIES EXCHANGE ACT.
  2.1.12
    
    Exhibit L  SATMEX 8 Program Satellite and DSS Training Plan, dated 3/12/2010
 Use or disclose of the data contained on this page is subject to the restriction set forth in Article 26Satmex 8 Amendment 1
    
    (LORAL LOGO)
 12




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO CERTAIN
INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN REDACTED AND
DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING THE REDACTED
PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION SUBJECT TO A REQUEST 
FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2 UNDER
THE SECURITIES EXCHANGE ACT.
  ARTICLE 4- PRICE
 4.1
    
    Firm Fixed PriceThe price to be paid by Purchaser to Contractor for the Deliverable Items 1 through 10 set
forth in Article 3.1 and Mission Operations Support Services, in each case, within the scope
of work detailed in the SOW, Orbital Performance Incentives and shipment of Deliverable
Items, including shipping insurance and customs and duties associated with shipment of the
Satellite to the designated Launch Site and all in accordance with the terms and conditions
of this Contract, as specified herein, shall be a firm fixed price of [***] (the Firm Fixed
Price), which shall be paid in accordance with Schedule 1 hereto, entitled SATMEX 8
Milestone Payment Plan for Firm Fixed Price. The Firm Fixed Price includes the ATP Price
paid by Purchaser to Contractor under the ATP, which shall be credited against the initial
payment set forth in Schedule 1 hereto, but does not include the [***] interest cost
calculated based on the Orbital Performance Incentives amount as described in Article 13.
The itemization of the Firm Fixed Price is as follows:
 Item
    
    Description
    
    Amount1.
    
    
    SATMEX 8 Satellite
    
    [***]2.
    
    
    Deliverable Data
    
    NSP3.
    
    
    Training
    
    NSP4.
    
    
    On-Site Support
    
    NSP5.
    
    
    In-Plant Participation
    
    NSP6.
    
    
    Technical Support over the Mission Life
    
    NSP7.
    
    
    Two (2) Dynamic Satellite Simulators (DSSs)
    
    [***]8.
    
    
    Ground Control Equipment Upgrades
    
    [***]9.
    
    
    Launch Support Services (launch base operations)
    
    [***]10
    
    
    Mission Operations Support Services
    
    NSPTotal Firm Fixed Price
    
    [***]
 Use or disclose of the data contained on this page is subject to the restriction set forth in Article 26Satmex 8 Amendment 1
    
    (LORAL LOGO)
 16




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO CERTAIN
INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN REDACTED AND
DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING THE REDACTED
PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION SUBJECT TO A REQUEST 
FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2 UNDER
THE SECURITIES EXCHANGE ACT.
  The Firm Fixed Price includes all applicable taxes, duties and similar liabilities imposed
by the United States Government or any political subdivision thereof, in connection with
Contractors performance under this Contract other than taxes imposed on Purchaser as a
result of Purchaser accepting title, ownership or possession of any Deliverable Items under
this Contract. The Firm Fixed Price includes any applicable taxes, duties and similar
liabilities imposed upon Contractors acquisition of items and services from subcontractors
and suppliers in performance of its obligations hereunder.4.2
    
    Effect of PaymentPayments made under this Contract shall neither relieve Contractor from the performance of
any of its obligations under this Contract, nor constitute a waiver of any of Purchasers
rights and remedies hereunder.4.3
    
    Tax Responsibilities
 4.3.1
    
    Purchaser shall be responsible for all taxes, duties, fees, levies, business, property and
sales taxes imposed after or in connection with the transfer of title of the SATMEX 8
Satellite or other Deliverable Items to Purchaser, withholding or value added taxes,
bonds, charges, contributions or any other fiscal burden related to the delivery,
acceptance or use of Deliverable Items under this Contract, including but not limited
to all financial liabilities imposed by the Mexican Government. Purchaser shall not be
liable for any taxes imposed on Contractor pursuant to Article 4.1 above.
Notwithstanding the above, Contractor shall be responsible for any net U.S. income
taxes imposed on Contractor for its performance under this Contract.
 Use or disclose of the data contained on this page is subject to the restriction set forth in Article 26Satmex 8 Amendment 1
    
    (LORAL LOGO)
 17




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO CERTAIN
INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN REDACTED AND
DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING THE REDACTED
PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION SUBJECT TO A REQUEST 
FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2 UNDER
THE SECURITIES EXCHANGE ACT.
   5.3
    
    Late PaymentIn the event that any payment to Contractor is not made when due hereunder, without
prejudice to Contractors other rights and remedies under this Contract, at law or in
equity, Purchaser shall pay Contractor interest at the rate of [***]% compounded annually on
the unpaid balance thereof from the date such payment is due hereunder until such time as
payment is made. [***]5.4
    
    Invoices
 Use or disclose of the data contained on this page is subject to the restriction set forth in Article 26Satmex 8 Amendment 1
    
    (LORAL LOGO)
 21




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO CERTAIN
INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN REDACTED AND
DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING THE REDACTED
PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION SUBJECT TO A REQUEST 
FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2 UNDER
THE SECURITIES EXCHANGE ACT.
 Invoices required to be delivered by Contractor hereunder shall be emailed or faxed to
Purchaser and followed by original plus one (1) copy at the following address:
 
 or to such other address as Purchaser may specify in writing to Contractor. A copy of the
invoice shall be sent to [***], phone [***], facsimile [***], email address: [***]; and
[***], phone [***], facsimile [***], email address: [***].The invoice shall contain the following mailing address:
  5.5
    
    Payment BankAll payments made to Contractor hereunder shall be in U.S. currency and shall be made by
electronic funds transfer to the following account:
 
 or such other account or accounts as Contractor may specify in writing to Purchaser thirty
(30) days before the corresponding payment date.
 Use or disclose of the data contained on this page is subject to the restriction set forth in Article 26Satmex 8 Amendment 1
    
    (LORAL LOGO)
 22




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##### 



FOIA CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO CERTAIN
INFORMATION IN THIS AGREEMENT. THIS INFORMATION HAS BEEN REDACTED AND
DENOTED BY ASTERISKS [***]. COPIES OF THE EXHIBIT CONTAINING THE REDACTED
PORTIONS HAVE BEEN FILED SEPARATELY WITH THE COMMISSION SUBJECT TO A REQUEST 
FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 24B-2 UNDER
THE SECURITIES EXCHANGE ACT.
  ARTICLE
29 - NOTICES
 29.1
    
    Written NotificationEach notice or correspondence required or permitted to be given or made hereunder shall be
in writing (except where oral notice is specifically authorized) to the respective
addresses, facsimile, e-mail and telephone numbers and to the attention of the individuals
set forth below, and any such notice shall be deemed given on the earlier to occur of (i)
actual receipt, irrespective of whether sent by post, facsimile transmission (followed by
mailing of the original copy), overnight courier, e-mail or other method, and (ii) seven (7)
days after mailing by registered or certified mail, return receipt requested, postage
prepaid.
       Use or disclose of the data contained on this page is subject to the restriction set forth in Article 26Satmex 8 Amendment 1
    
    (LORAL LOGO)
 92