# STC SA7186SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 40/50 Single and Two Axis Automatic Flight Guidance Systems, Model ST-104-40/50.
- Applied: August 31, 1988
- Status date: July 1, 1991
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 6A1](https://openairdocs.org/tcds/6A1)
- Certificate PDF: https://openairdocs.org/files/sha256/77/45/7745e332b08bb4abc11bbeaa20e40e0ea2435f8d97da7b768e5f8979be57a5d6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/120078181D41022785256CC20056A1E8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7186SW-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

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.

fiatd Skua rf 3mm Bqiarrmmt of transportation—jfttoal atriation administration £upploncntal "Cgpc Certificate SA7186SW-D S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 f-d^M^aOM, 3 Civil Air 6A1 Gulf stream Aerospace 500, 500-A, 500-B, 500-S, and 500-U Installation of S-TEC System 40/50 Single and Two Axis Automatic Flight Guidance Systems, Model ST-104-40/50, according to Bulletin No. 207, Revision 1, dated 6-10-91 and Master Drawing List No. 92482, Revision A, dated 6-10-91 and/or later FAA Approved revisions of the above data (28 Volt System).

Also eligible on the above models when modified per STC SA585SW (Extended Nose).

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89801, dated 9-12-88 is required for Gulfstream Aerospace Models 500 and 500-A (Aero Commander) for System 40 and/or later FAA Approved revisions of the above supplement.

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

^^ ~»: 8-31-88 9-12-88 7-01-91, Revision 1 William J. Thomas DAS Staff Coordinator, DAS 5 SW fine of not exceeding SI ,000, or imprisonment not exceeding Sytars, or both.

This ctrlifeatt may bt tiaiufrrrtJ in ucmdana unlit FAR 21.47.

fAA tl t»-l (10-M)

ttrand Setts of 2atrca Bepartmcnt of Transportation— .federal attation administration Supplemental ICgpe Certificate(Continuation £heet) SA7186SW-D, Revision 1 Limitations and Conditions (con't.)

3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89801-1, dated 7-01-91 is required for Gulfstream Aerospace Models 500 and 500-A (Aero Commander) And The Above Models When Modified Per STC SA585SW (Extended Nose) for System 40 and/or later FAA Approved revisions of the above supplement.

4. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89802, dated 9-12-88 is required for Gulfstream Aerospace Models 500 and 500-A (Aero Commander) for System 50 and/or later FAA Approved revisions of the above supplement.

5. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89802-1, dated 7-01-91 is required for Gulfstream Aerospace Models 500 and 500-A (Aero Commander) And The Above Models When Modified Per STC SA585SW (Extended Nose) for System 50 and/or later FAA Approved revisions of the above supplement.

6. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89922, dated 7-01-91 is required for Gulfstream Aerospace Models 500-B, 500-S, and 500-U (Aero Commander) And The Above Models When Modified Per STC SA585SW (Extended Nose) for System 40 and/or later FAA Approved revisions of the above supplement.

7. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89923, dated 7-01-91 is required for Gulfstream Aerospace Models 500-B, 500-S, and 500-U (Aero Commander) And The Above Models When Modified Per STC SA585SW (Extended Nose) for System 50 and/or later FAA Approved revisions of the above supplement.

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

•I'iv alteration of this certificate is puniihabU by afiru of not exceeding 11,000, or imprisonment not exceeding 3 years, or hnth.

AA FORM 8110-z.l (I0.«») T/ni eirtiftalt may bt Irantftrrat 1/1 oteordanci with l'.\H ;'/.•/* PAGE 2 OP 2 PAGES

INSTRUCTIONS : The transfer endorsement below may be used to notify the approprtate FAA Regional Office of the transfer of this Supplemental Type Certificate.

The FAA will reissue the certificate in the name of the transferre and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to CXgme. of transferee) (Address of transferee) (tyanier andstreet) (City, State, amCZI'P cade.)

from (y^ame of grantor) (Print or type) (Address of grantor) (!A[um6er ant street) (City, State, amlZlT code) Exent of Authority (if licensing agreement) :

Signature of grantor (In inQ : __ __ Page 2 of 2

## Every issue (1)

- July 1, 1991: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/77/45/7745e332b08bb4abc11bbeaa20e40e0ea2435f8d97da7b768e5f8979be57a5d6)

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