# STC SA09149AC-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-627,
- Applied: April 22, 1996
- Status date: February 20, 2001
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A17](https://openairdocs.org/tcds/3A17)
- Certificate PDF: https://openairdocs.org/files/sha256/36/da/36da1e6fb06c6ceb73922046eaae8ad0cf7aeb794e6db7d7f047f68a8eea6d2d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F2EB906F32CC061D85256CC1007F39E8.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09149AC-D

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 172RG ([TCDS 3A17](https://openairdocs.org/tcds/3A17))

## 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: SA09149 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 tir Regulations.

Original Product I ype Certifente A umber: ЗА17 Make: Cessna Model: 172RG Description of Type Design Change:

Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-627, according to Bulletin No. 727, Revision 1, dated 2-20-01 and Master Drawing List No. 92922, Revision A, dated 2-20-01 or later FAA Approved revisions of the above data (28 Volt System).

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

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Into of afflication: 4-22-96 Date wisued:

Date of Issuance: 4-26-96 Date Amended: 2-20-01 By Direction of the Administrator FEDERAL AVIATION (Signature) * TOMINISTRATIOT Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number 5A09149AC-D Limitations and Conditions: (con't.)

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891251, dated 4-26-96 is required or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891251, Revision 1, dated 2-20-01 is required for Cessna model 172RG for S-TEC System 55/55X or later FAA Approved revisions of the above supplement.

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

PAA 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 ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number & street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- February 20, 2001: Amended, Current. [certificate](https://openairdocs.org/files/sha256/36/da/36da1e6fb06c6ceb73922046eaae8ad0cf7aeb794e6db7d7f047f68a8eea6d2d)

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