STC SA9173SC-D

Number SA9173SC-D This Certificate issued to L-3 Communications Integrated Systems, L.P.

10001 Jack Finney Blvd.

Greenville, TX 75402 Part 25 of the Federal Aviation Regulations.

Original Product Type Certificate Number: A20WE Make : Boeing Model : 747-2G4B Description of Type Design Change: Replacement of existing laptop computers in accordance with Raytheon Systems Company Sealed Drawing List, SDL 5475-1, Revision F dated 27 August 1999 or later FAA approved data.

Continued airworthiness is provided by source data for the affected technical orders (T.O.) 1C-25(V)A-1-2 Comm Systems OPS Manual, 1C-25(V)A-1-2CL Check List, 1C-25(V)A-1 Flight Manual, 1C-25(V)2-43 Maintenance Manual, 1C-25(V)4-43 IPB, and 1C-25(V)2-110 Wiring Diagrams.

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

2. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

3. When installed, airplanes with this STC are limited to operations excluding those of an Air Carrier. Specifically, no operations under 14 CFR 121, 14 CFR 129 or any foreign Air Carrier are permitted.

Date of application: 19 December 1997 Date reissued : July 29, 2002 Date of issuance : 23 April 1998 Date amended : Amend. 1 – 26 August 1998;

Amend. 2 – 27 August 1999; Amend. 3 - 22 March 2013 By direction of the Administrator

(Signature) Michael E. Hopper ODA-750173-SW Administrator, Alternate

(Title)

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