# STC SA09526AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-025.
- Applied: March 21, 2002
- Status date: March 25, 2002
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/8b/8c/8b8ca089efbaff0b6ded5fed000fdff38844129d15fb90a72ad09d3bd2787c83
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/66995451D6BE47CB85256CC1007F3B44.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09526AC-D

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company 172R ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172S ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

## 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: SA09526ACD This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 23 of the Federal A ir Regulations.

Original Product Type Certifcate Number: ЗА12 Make: Cessna Model: 172R and 172S Description of Type Design Change:

Installation of S-TEC System 60 Two Axis Automatic Flight Guidancel System, Model ST-025, according to Bulletin No. 128, Revision 13, dated 3-20-02 and Master Drawing List No. 9226, Revision M, dated 3-20-02 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.

Date of Application: 3-21-02 Date Reissued:

Date of Issuance: 3-25-02 Date Amended:

By Direction of the Administrator FEDERAL AVIATION miel/L (Signature) TOMNISTRATO 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: SA09526ACD Limitations and Conditions: (con't.)

I. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 892121, dated 3-25-02 is required for Cessna models 172R and 172S or later FAA Approved revisions of the above supplement.

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

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

INSTRUCTIONS The transfer endorsement below may be used to notify the appropriate FAA Fegional Office of the transfer of this Supplemental Type Certificate.

The FAA will reissue the certificate in the name of the transferee and forward it to him.

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 2IP code) Extent of Authority (if licensing agreement): - Date of Transfer:

Signature of grantor (In ink):

## Every issue (1)

- March 25, 2002: Issued, Current. [certificate](https://openairdocs.org/files/sha256/8b/8c/8b8ca089efbaff0b6ded5fed000fdff38844129d15fb90a72ad09d3bd2787c83)

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