# STC SA09227AC-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-685-20/30.
- Applied: May 21, 1997
- Status date: May 23, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 1, Part 21
- Data sheets: [TCDS A18EU](https://openairdocs.org/tcds/A18EU)
- Certificate PDF: https://openairdocs.org/files/sha256/86/40/86401e9dcd3af66a085ee3ac94c2c5e3c4ec152a9bbca88ff877c3fef7c0f7e1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FDCE1B939594BE7A85256CC1007F3A2B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09227AC-D

## ADs that name it (0)

None.

## Approved models (4)

- Cessna Aircraft Company FR172E ([TCDS A18EU](https://openairdocs.org/tcds/A18EU))
- Cessna Aircraft Company FR172F ([TCDS A18EU](https://openairdocs.org/tcds/A18EU))
- Cessna Aircraft Company FR172G ([TCDS A18EU](https://openairdocs.org/tcds/A18EU))
- Cessna Aircraft Company FR172H ([TCDS A18EU](https://openairdocs.org/tcds/A18EU))

## 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: SA09227 AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 3 of the Civil I is Regulations.

Original Product I ypo Certifcate Number: A18EU Make: REIMS AVIATION S.A. MODELS CESSNA Model: FR172E, FR172F, FR172G, AND FR172H Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-685-20/30, according to Bulletin No. 785, dated 5-20-97 and Master Drawing List No. 92997, dated 5-20-97 or later FAA Approved revisions of the above data (14 Volt System).

FAA/DAS Approved Supplemental Flight Manual, P/N 891395, dated 5-23-97 is required for Reims Aviation S.A. Models Cessna FR172E, FR172F, FR172G, and FR172H for S-TEC System 20 or later FAA Approved revisions of the above supplement.

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

Date of Application: 5-21-97 Date Reissued:

Date of Issuance: 5-23-97 Date Amended:

By Direction of the Administrator FEDERAL AVIATION Wein homer TOMNISTRATO William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09227 AC-D Limitations and Conditions: (con't.)

3. FAA/DAS Approved Supplemental Flight Manual, P/N 891401, dated 5-23-97 is required for Reims Aviation S.A. Models Cessna FR172E, FR172F, FR172G, and FR172H for S-TEC System 30 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.

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 & street) (City, State, and ZIP codel Extent of Authority (if licensing agreement):

Date cf Transfer:

Signature of grartor (In ink):

## Every issue (1)

- May 23, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/86/40/86401e9dcd3af66a085ee3ac94c2c5e3c4ec152a9bbca88ff877c3fef7c0f7e1)

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