# STC SA09211AC-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.
- Applied: May 8, 1997
- Status date: May 12, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A18EU](https://openairdocs.org/tcds/A18EU)
- Certificate PDF: https://openairdocs.org/files/sha256/87/5f/875fda51ecbfb55257664297252dd6db0698e8423e5440b099b4be0b0d32545b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4CFBE854A67A376B85256CC1007F3A18.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09211AC-D

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company FR172K ([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: SA09211AC-D I his I ortipcate issued to S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specifed horeon moots the ansorthiness roguirements of Past 3 of the Civil It is Regulations.

Original Product I ype Certifcate Number: AI8EL Make: Reims Aviation S.A. Cessna Model: FR172K Description of 9 yre Design & hangs:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-671-20/30, according to Bulletin No. 771, dated 5-07-97 and Master Drawing List No. 92989, dated 5-07-97 or later FAA Approved revisions of the above data (28 Volt System).

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement P/N 891359, dated 5-12-97, is required for Reims Aviation S.A. Model Cessna FR172K 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: 5-08-97 Date Reissued:

Date of Issuance: 5-12-97 Date Amended:

By Direction of the Administrator FEDERAL AVIATION Waitin Thomas Mignatu TOMINSTRATO DAS Staff Coordinator, DAS 5 SW William J. Thomas (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09211 AC-D Limitations and Conditions: (con't.)

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement P/N 891365, dated 5-12-97, is required for Reims Aviation S.A. Model Cessna FR172K for S-TEC System 30 or later FAA Approved revisions of the above supplement.

3. Compatibility of this modification with other previously approved modifications must be determined

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

The EAR will reissue the certificate in the name of the transferee and fetward it to ham.

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):

Signature of grantor (In ink):

## Every issue (1)

- May 12, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/87/5f/875fda51ecbfb55257664297252dd6db0698e8423e5440b099b4be0b0d32545b)

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