# STC SA7135SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 65 two axis automatic flight guidance system, ST-394.
- Applied: January 14, 1987
- Status date: January 7, 1993
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A4CE](https://openairdocs.org/tcds/A4CE)
- Certificate PDF: https://openairdocs.org/files/sha256/cd/9d/cd9d0a5f2432d278c70636d8a8230918520b67aba762554d207c00b94d1f8232
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4827C85D51D5B99985256CC20056A19B.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7135SW-D

## ADs that name it (0)

None.

## Approved models (23)

- The Cessna Aircraft Company 206 ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company P206 ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company P206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company P206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company P206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company P206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company P206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company TP206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company TP206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company TP206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company TU206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company TU206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company TU206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company TU206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company TU206G ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company U206 ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company U206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company U206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company U206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company U206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company U206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company U206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- The Cessna Aircraft Company U206G ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))

## What the certificate says

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

Aria Sata d Ano Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA71355W-0 This certificate issued to: S-TEC Corporation 946 Pegram Wolters Industrial Park Mineral Wells, Texas 76067 Port 3 of the CiVIl Air Regulations Original Product -Typo Centificato Numben: AACE Make: CESSNA Model: 206, P206, 0206, P206A, U206A, P206B, U206B, Description of Type Design Change: P206C, TP206C, U206C, TU206C, P206D, TP206D, U206D, TU206D, P206E, TP206E, 0206E, TU206E, 0206F, TU206F, 0206G, and TU206G Installation of S-TEC System 65 Two Axis Automatic Flight Guidance System, ST-394, according to Bulletin No. 494, Revision 1, dated 12-14-92 and Master Drawing List No. 92409, Revision A, dated 12-14-92 and/or later FAA Approved revisions of the above data (14 Volt System).

1. Also eligible on Models U206G and TU206G When Modified Per STC SA1513WE (Robertson STOL) or STC SA3634SW (Extended Range Fuel Tanks).

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

Thomas (Tille)

This certificate may be transferred in accordance wick FAR 21.17.

**PAN FORM 8110-8 (10-68)**

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA71355W-D, Revision 1 Limitations and Conditions: (con't.)

2. FAA Approved Supplemental Flight Manual, P/N 89721, dated 2-03-87 is required

3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89722, dated 2-03-87 is required for Cessna Models U206G and TU206G, S/N U20604650 and Up and/or later FAA Approved revisions of the above supplement.

FAA Approved revisions of the above supplement.

: 5. FAA Approved Supplemental Flight Manual, P/N 891000, dated 1-07-93 is required for Cessna Models U206G and TU206G When Modified Per STC SA1513WE (Robertson STOL) and/or later FAA Approved revisions of the above supplement.

6. FAA Approved Supplemental Flight Manual, P/N 891001, dated 1-07-93 is required Tor Cessna Models 206, P206, 0206, P206A, U206A, P206B, and U206B and/or later FAA Approved revisions of the above supplement.

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

FAA FORM 8110-2-1 (10-68) This certificate may be transferred in accordance with fAH "1.47.

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 ZIP code) Exent of Authority (if licensing agreement) :

Signature of grantor (1n ink) :

## Every issue (1)

- January 7, 1993: Amended, Current. [certificate](https://openairdocs.org/files/sha256/cd/9d/cd9d0a5f2432d278c70636d8a8230918520b67aba762554d207c00b94d1f8232)

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