STC ST10704SC

Number: ST10704SC

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: A2NM Make: The Boeing Company Description of Type Design Change Model: 757-200 Series

Installation of Provisions for a Commercial Wideband SATCOM (CWS) System in accordance with (1) L -3 Communications Integrated Systems, L.P. Sealed Drawing List SDL 10460-1 Revision B dated 11 April 2016, (2) L-3 Flight Manual Supplement dated 25 January 2016, (3) Instructions for Continued Airworthiness, L -3 Document No.

G10460.28.08 Revision B or later FAA/ODA approved revisions of (1) (2) and/or (3).

1. The installer must determine whether this design change is compatible with previously approved modifications.

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

(Limitations and Conditions continued on page 3 of 3)

Date of application: 06 January 2015 Date reissued: 17 June 2016 Date of issuance: 11 April 2016 Date amended:

Signature

Title ODA-750173-SW Administrator Page 1 2 3 Amdt

FAA Form 8110-2 (5/14) Page 1 of 3

To (Name and address of transferee)

From (Name and address of grantor)

FAA Form 8110-2 (5/14) Page 2 of 3

Number: ST10704SC Date of Reissuance: 17 June 2016 Limitations and Conditions: (Continued)

3. The FAA has not certified the equipment for which these provisions are intended. You must get additional FAA approval to install this equipment. The FAA must evaluate the installation to ensure it complies with the applicable airworthiness standards. It is the responsibility of the installer to verify functionality of the Commercial Wideband SATCOM (CWS) System; it is expected a later STC will activate the provisions of the CWS System as installed under this STC.

4. Equivalent Level of Safety Findings have been made for the following regulation of 14 CFR part 25:

§ 25.251 Vibration and buffeting (documented in TAD ELOS Memo 10460- 1-F-1).

Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Boeing 757-200 aircraft is as follows:

a. The type certification basis for Boeing 757-200 series airplanes is shown on TCDS A2NM for parts not changed or not affected by the change.

b. The certification basis for parts changed or affected by the change since the reference date of application 06 January 2015, is as shown in TCDS A2NM plus later amendment levels for the following paragraphs:

25.365(e) Amdt 25-72; 25.613(a) (b) (c) Amdt 25-112; 25.1529 Amdt 25-54.

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FAA Form 8110-2 (5/14) Page 3 of 3