# STC ST04753NY - Type: Supplemental type certificate - Status: Current, Amended - Holder: Trimec Aviation, United States - Description: Installation of Galileo HDX with GOGO Avance Platforms - Applied: January 27, 2025 - Status date: August 21, 2026 - Product: Aircraft, Large Airplane - Certification basis: Part 25 - Data sheets: [TCDS A53NM](https://openairdocs.org/tcds/A53NM) - Certificate PDF: https://openairdocs.org/files/sha256/02/99/0299323e63785281ebb4e3fb5faac2a7d4f7d7d1d3d4781b1da39f6fdfaa55a9 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID104439890320260826161420.0001 - DRS record last changed: August 26, 2026 - Page: https://openairdocs.org/stc/ST04753NY ## ADs that name it (0) None. ## Approved models (2) - Gulfstream Aerospace LP Galaxy ([TCDS A53NM](https://openairdocs.org/tcds/A53NM)) - Gulfstream Aerospace LP Gulfstream 200 ([TCDS A53NM](https://openairdocs.org/tcds/A53NM)) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number  BB__ BB_. Original Product 7\SH&HUWLILFDWH1XPEHU Make: VHHFRQWLQXDWLRQVKHHW IRUDGGLWLRQDOGDWHV By Direction of the Administrator Signature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rimec Aviation 116 Texas Way Fort Worth TX 76106 25 Title 14 Code of Federal Regulations A53NM Gulfstream Aerospace LP Galaxy, Gulfstream 200 Installation of Galileo HDX with GOGO Avance Platforms in accordance with (1) Master Data List (MDL) G200-MDL-0186 Rev A, dated August 4, 2025, or later FAA approved revision. (2) Instructions for Continued Airworthiness (ICA) G200-ICA-0186, Rev IR, dated June 10, 2025, or later FAA accepted revision, shall be made available to the operator at the time of installation and be incorporated into the operator’s maintenance program. (3) Airplane Flight Manual Supplement (AFMS) G200-AFMS-0186 Rev IR, dated August 4, 2025, or later FAA approved revision, is required and must be carried during all flights. (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 the certificate to alter the product, the holder must give the other person written evidence of that permission. (Limitations and Conditions Continued on Page 3 of 3). 1/27/25 8/7/25 8/21/26 ODA administrator, ODA-834634-NE 3 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number  (IIHFWLYH'DWH I Transferr Endorsementt Transfer the ownership of Supplemental Type Certificate Number: Too (Name and address of transferee): Date oI transfer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ontinuation Sheet) Number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imitations and Conditions (continued from Page 1 of 3): (3) This STC is applicable to all serial numbers for the Make: Gulfstream Aerospace LP Models: Galaxy, Gulfstream 200. (4) Operational approval to permit use of Portable Electronic Devices (PED) is not part of this STC. Certification Basis: Based on 14 CFR § 21.115 and § 21.101, and the FAA policy for design changes that are identified as not significant in FAA Order 8110.48, the certification basis for Gulfstream Aerospace LP Models: Galaxy, Gulfstream 200 is as follows: (1) The type certification basis for parts not changed or not affected by the change is shown on TCDS A53NM. (2) The modification certification basis for parts changed or affected by the change since the reference application date, January 27, 2025, is based upon 14 CFR part 25, effective Feb 1, 1965, as amended through 25-82, with the exception of those above 25-82 as follows: CFR 25.111(c)(1)(3)(i) amdt 25-121, 25.115(b)(1) amdt 25-92, 25.119(a) amdt 25-121, 25.121 amdt 25-121, 25.123(b) amdt 25-121, 25.305(a)(b) amdt 25-86, 25.321 amdt 25-86, 25.341 amdt 25-86, 25.365(a)(b)(c)(d)(e) amdt 25-87, 25.561(a)(b)(c) amdt 25-91, 25.571(a)(b)(e)(1) amdt 25-96, 25.613(a)(b)(c) amdt 25-112, 25.773(a)(2) amdt 25-108, 25.841(a) amdt 25-87, 25.869(a)(1)(4) amdt 25-113, 25.901(c) amdt 25-126, 25.903(c) amdt 25-140, 25.1353(a)(b)(d)(1)(2)(3) amdt 25-113, 25.1431(c) amdt 25-113, 25.1585(a) amdt 25-105, 25.1587(b) amdt 25-108. (3) This alteration has been determined to have no acoustical change per 21.93(b) amdt 21-97. (4) Equivalent Level of Safety Findings have been made for the following regulation(s): §25.251(b) Vibration and Buffeting (documented in P&S ELOS Memorandum ODA ADC-0186-25.251). § 25.773(a)(2), Pilot Compartment View (documented in P&S ELOS Memo ODA-ADC-0186-SE-1). --- END --- 33 08/21/26 ## Every issue (2) - August 21, 2026: Amended, Current. [certificate](https://openairdocs.org/files/sha256/02/99/0299323e63785281ebb4e3fb5faac2a7d4f7d7d1d3d4781b1da39f6fdfaa55a9) - August 7, 2025: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/8e/4a/8e4ab6cbb76ffc4c6ea0012a188df5a271a0e480fb07e0ee7d2a6dc61122b5c3) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.