# STC SA7187SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC Manual Electric Trim System, Model ST-129.
- Applied: September 1, 1988
- Status date: June 26, 1995
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 6A1](https://openairdocs.org/tcds/6A1)
- Certificate PDF: https://openairdocs.org/files/sha256/d6/fb/d6fb1d42c28366ed9150a69222822faec8b75207e740d244312bad647ce08717
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DD1FFF37F1CB621485256CC20056A1E9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7187SW-D

## ADs that name it (0)

None.

## Approved models (5)

- Twin Commander Aircraft Corporation 500 ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft Corporation 500-A ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft Corporation 500-B ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft Corporation 500-S ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft Corporation 500-U ([TCDS 6A1](https://openairdocs.org/tcds/6A1))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Baked Sons & Aria Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5A718754-0 This certificate issued to: S-TEC Corporation 946 Pegram Mineral Wells, TX 76067 Certifies that the change in the type design for the following product with the limilations and conditions shonfon suspecifed homon mete the sinvonhines requinements of Port 3 ofithe CiVIl Air Regelations Original Product -TypoCentificale Numbon: 6A1 Make: Gulfstream Aerospace Model: 500, 500-А, 500-B, 500-S, and 500-U Description of Type Design Change: (Aero Commander) Installation of S-TEC Manual Electric Trim System, Model ST-129, according to Bulletin No. 229, Revision 1, dated 6-16-95 and Master Drawing List No. 92483, later FAA Approved revisions of the above data (28 Volt System).

1. Also eligible on the above Models When Modified per STC SA585SW (Extended Nose).

(See Continuation Sheet, Page 2, a part of this STC.)

Thomas (Title)

**PAN FORM 8110-2 (10-68)**

Haina Stars a Alanca Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA71875W-D, Revision 1 Limitations and Conditions: (con't.)

2. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89803, dated 9-13-88 is required for Gulfstream Aerospace Models 500 and 500-A (Aero Commander) or later FAA Approved revisions of the above supplement.

3. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Suo, 00-4, 500-6, 50013, and 500-(Aero remander) And The Above Models ce Models When Modified Per STC SA585SW (Extended Nose) or later FAA Approved revisions of the above supplement.

4. Compatibility of this modification with other previously approved modifications must be determined by the installer.

ti PAGE 2 OF 2 PAGES

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and Z1P code) Exent of Authority (if licensing agreement) :

Signature of grantor (In ink) :

## Every issue (1)

- June 26, 1995: Amended, Current. [certificate](https://openairdocs.org/files/sha256/d6/fb/d6fb1d42c28366ed9150a69222822faec8b75207e740d244312bad647ce08717)

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