# STC ST12233MC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Gulfstream Aerospace Corporation, United States
- Description: Installation of a Honeywell Primus 880 Color Weather Radar system
- Applied: July 24, 2025
- Status date: December 15, 2025
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- Certificate PDF: https://openairdocs.org/files/sha256/ea/c2/eac20c361f5fa7a017ba1aef42f6f38a91cacf3e84f336fcb3cac5f8c62eea7c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157324809320251222183827.0001
- DRS record last changed: December 22, 2025
- Page: https://openairdocs.org/stc/ST12233MC

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation GV-SP ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))

## 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 This certificate issued to:

ST12233MC 25 Code of Federal Regulations A12EA Gulfstream GV-SP Installation of a Honeywell Primus 880 Color Weather Radar system in accordance with Gulfstream Aerospace Corporation's Index List GDL100000107 revision (-), dated December 15, 2025, or later FAA approved revision.

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.

3. The -3 configuration of STC ST03399AT must be installed prior to or concurrently with this STC.

July 24, 2025 December 15, 2025 for Robert Glasscock ODA Lead Administrator, ODA-511131-CE Gulfstream Aerospace Corporation Gulfstream Aerospace Corporation 500 Gulfstream Road Savannah, GA 31408

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number

Date o transfer:

ST12233MC December 15, 2025

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number ST12233MC December 15, 2025 Description of Type Design Change (continued):

FAA accepted Instructions for Continued Airworthiness CE51125A001 revision (-), dated 11/13/2025, or later FAA accepted revision is required and must be available to the operator at the time of installation.

The FAA approved Airplane Flight Manual Supplement (AFMS) CE500000021 revision (-), dated December 15, 2025, or later FAA approved revision is required and must be carried in the aircraft on all flights.

Certification Basis:

Gulfstream GV-SP Type Certificate Basis, 14 CFR 25, effective February 1, 1965, including Amendments 25-1 through 25-98 as defined by the FAA TCDS A12EA Rev 53, dated November 2, 2022.

Equivalent Level of Safety Findings have been made for the following regulation: 14 CFR 25.773(a)(2) at Amendment 25-72, Pilot Compartment View documented in ELOS Memorandum # SA00767MC-T-S-1-GV-SP.

## Every issue (1)

- December 15, 2025: Issued, Current. [certificate](https://openairdocs.org/files/sha256/ea/c2/eac20c361f5fa7a017ba1aef42f6f38a91cacf3e84f336fcb3cac5f8c62eea7c)

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