# STC SA09280AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-675.
- Applied: October 7, 1997
- Status date: October 10, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A4EU](https://openairdocs.org/tcds/A4EU)
- Certificate PDF: https://openairdocs.org/files/sha256/c2/06/c20671215dc00874a42850a7a1bfb0dfb2c1db04a271fcbb93c60580857f192e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8CD6E9683CD9E1CD85256CC1007F3A60.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09280AC-D

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company F172M ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))
- Cessna Aircraft Company F172N ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))

## 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: SA09280AC-D I his Cotifeate 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 hercon meets the aborthiness requiements of Part 3 of the Cord Ln Regulations.

Original Product I ype Certifcate A umber: A4EU Make: Reims Aviation S.A. Models Cessna Model: F172M AND F172N Description of Type Design Change:

Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-675, according to Bulletin No. 775, dated 10-6-97 and Master Drawing List No. 921025, dated 10-6-97 or later FAA Approved revisions of the above data (14 Volt System).

Also eligible on The Above Models When Modified By 180 H.P. Engine Conversion.

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

Date of Application: 10-7-97 Date trisued:

Lale of isnance: 10-10-97 Date Amended:

By direction of the A droustrates FEDERAL AVIATION Wiin Hannes (Signature) TOMINISTRATO William J. Thomas DAS Staff Coordinator DAS 5 SW (Tile) Any altei FAR Fon B11O of 2

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09280AC-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Supplemental Flight Manual, P/N 891528, dated 10-10-97 is required for Reims Aviation S.A. Model Cessna F172M And The Above Model When Modified By 180 H.P. Engine Conversion or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891529, dated 10-10-97 is required for Reims Aviation S.A. Model Cessna F172N And The Above Model When Modified By 180 H.P. Engine Conversion or later FAA Approved revisions of the above supplement.

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

FAA Form 8:10-2-1 (10-69) Page 2 of 2

The EAA will reissue the certificate in the name of the transferee and forward it to nim.

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 ZTP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink) :

## Every issue (1)

- October 10, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/c2/06/c20671215dc00874a42850a7a1bfb0dfb2c1db04a271fcbb93c60580857f192e)

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