STC ST11969AT

ST11969AT Part 25 Title 14 Code of Federal Aviation Regulations T00015AT Gulfstream GVI Installation of Gogo Galileo HDX System in accordance with Gulfstream Aerospace Corporation Index List GDL100000111 Revision (-), dated May 12, 2026, or later FAA approved revision.

FAA approved Airplane Flight Manual Supplement, CE613030006 Revision (-), dated May 13, 2026 or later FAA approved revision is required and must be carried in the aircraft on all flights.

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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 the permission.

(continued on page 3 of 3) January 22, 2026 May 13, 2026 Robert Glasscock ODA Lead Administrator, ODA-511131-CE Gulfstream Aerospace Corporation For {{Sig_es_:signer1:signature }} {{Em_es_:signer1:email }} Gulfstream Aerospace Corporation 500 Gulfstream Road Savannah, GA 31408

Description of Type Design Change: (continued) FAA accepted Instructions for Continued Airworthiness - Gogo Galileo HDX System Installation CE62303A001 Revision (-), dated May 04, 2026 or later FAA accepted revision.

Limitations and Conditions: (continued)

Certification Basis:

Based on 14 CFR 21.101, 21.115 and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for Gulfstream Model GVI is as follow:

a. 14 CFR Part 25 amendments 25-1 through 25-120 and 25-122, 25-124, 25-132, 25-137 and 25- 144 except for paragraphs which are complied with at the identified amendment levels in the TCDS with special conditions, exemptions, equivalent safety findings, exemptions, optional design standards, and environmental standards as defined in TCDS T00015AT.

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