# STC SA09295AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-741-20/30.
- Applied: November 5, 1997
- Status date: November 7, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A13CE](https://openairdocs.org/tcds/A13CE)
- Certificate PDF: https://openairdocs.org/files/sha256/b7/4f/b74f2d23ae377391b5b573888c4d95033c4ef4b155629c8f8957e3bf1fbbf654
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0BC06C99F1A924E685256CC1007F3A71.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09295AC-D

## ADs that name it (0)

None.

## Approved models (3)

- Cessna Aircraft Company 177 ([TCDS A13CE](https://openairdocs.org/tcds/A13CE))
- Cessna Aircraft Company 177A ([TCDS A13CE](https://openairdocs.org/tcds/A13CE))
- Cessna Aircraft Company 177B ([TCDS A13CE](https://openairdocs.org/tcds/A13CE))

## What the certificate says

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09295 AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 23 of the Forderal & viation Kregulations.

Original Product $ ype Certifcate N amber: AI3CE Make: Cessna Model: 177, 177A, and 177B Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-741-20/30, according to Bulletin No. 841, dated 11-03-97 and Master Drawing List No. 921040, dated 11-03-97 or later FAA Approved revisions of the above data (14 Volt System).

FAA/DAS Approved Supplemental Flight Manual, P/N 891569, dated 11-07-97 is required for S-TEC System 20 for Cessna Models 177, 177A, and 177B, S/N 17702313 and Below or later FAA Approved revisions of the above supplement.

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

Date of Application: 11-05-97 Date Reissued:

Date of Issuance: 11-07-97 Date Amended:

By Direction of the Administrator FEDERAL AVIATION (Signature TOMINI STRATO William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title)

FAA Form 8110-2(10-681 Page 1 of 2

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09295 AC-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891570, dated 11-07-97 is required for S-TEC System 20 for Cessna Model 177B, S/N 17702314 through S/N 17702672 or later FAA Approved revisions of the above supplement.

3. FAA/DAS Approved Supplemental Flight Manual, P/N 891574, dated 11-07-97 is required for S-TEC System 30 for Cessna Models 177, 177A, and 177B, S/N 17702313 and Below or later FAA Approved revisions of the above supplement.

4. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891575, dated 11-07-97 is required for S-TEC System 30 for Cessna Model 177B, S/N 17702314 through S/N 17702672 or later FAA Approved revisions of the above supplement.

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

FAA Form 8110-2-1(10-69) Page 2 of 2

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (CITY, State, and 2TP code) from (Name of grantor) (Print or type) (Address of grantor) (Number & street) (City, State, and ZIP codel Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- November 7, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/b7/4f/b74f2d23ae377391b5b573888c4d95033c4ef4b155629c8f8957e3bf1fbbf654)

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