STC ST04478CH

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ST04478CH Western Jet Aviation 16101 Saticoy Street Van Nuys, CA 91406 Part 25 Federal Aviation Regulations A12EA Gulfstream Aerospace Corporation GIV-X Installation of a Collins KuSAT-2000 Tail-Mounted SATCOM system in accordance with StandardAero Master Data List 1038905, Revision (A), dated October 27, 2020 or later FAA approved revision.

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

(See Continuation Sheet) July 13, 2020 March 5, 2021 October 28, 2020 Manager, Airframe & Administrative Section, Chicago ACO Branch 4

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Date oI transfer:

ST04478CH ST04478CH 4

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FAA Approved Airplane Flight Manual Supplement document number 11038906, Rev (A), dated September 17, 2020 or later FAA approved revision is a required part of this modification.

The aircraft must be maintained in accordance with FAA accepted Instructions for Continued Airworthiness document number 1038907, Rev (A), dated October 20, 2020 or later FAA accepted revision in addition to the basic airplane maintenance manuals.

Limitations and Conditions - cont.

2. This STC requires prior or concurrent embodiment of a TPED STC, Service Bulletin or embodiment of STC ST04283CH.

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

Certification Basis - cont.

Based on 14 CFR §§ 21.115, 21.101 and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for the Gulfstream Aerospace Corporation GIV-X aircraft, Installation of a Collins KuSAT-2000 Tail-Mounted SATCOM system is as follows:

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a. The type certification basis for Gulfstream Aerospace Corporation GIV-X is shown on TCDS A12EA 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, July 13, 2020, is based upon TCDS A12EA. Based on 14 CFR § 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for this modification was determined to be:

Regulations at the amendment level in TCDS A12EA

25.1(a, b)(25-0), 25.29(a, b)(25-72), 25.301(a-c)(25-23), 25.303(25-23), 25.305(a-c) (25-86), 25.307(a)(25-72), 25.561(a,c)(25-91), 25.571(a, b)(25-96), 25.601(25-0),

25.603(a-c)(25-46), 25.605(a)(25-46), 25.607(a-c)(25-23), 25.609(a)(25-0), 25.611 (25-23), 25.613(a-d)(25-72), 25.619(a-c)(25-23), 25.625(a-c)(25-72), 25.629(a,b) (25-77), 25.1301(a-d)(25-0), 25.1307(c)(25-72), 25.1309(a, b, d, e- g)(25-41), 25.1322 (c, d)(25-38), 25.1351(a)(25-72), 25.1353(a, b)(25-42), 25.1357(a, c)(25-0), 25.1381(a,

b)(25-72), 25.1431(a, c)(25-0), 25.1501(a, b)(25-42), 25.1519, 25.1529(25-54),

25.1581(a-d)(25-72), 25.1583(c)(25-72), 25.1585(a, b)(25-46), 25.1587(b)(25-72).

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