# STC SA09230AC-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-686.
- Applied: May 30, 1997
- Status date: June 4, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A4EU](https://openairdocs.org/tcds/A4EU)
- Certificate PDF: https://openairdocs.org/files/sha256/34/56/34569a597ccd902ada6e64c7f9463baaaa4ec68db724a2eb96dc1ecb32774afe
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6C7CD0A96FC1AA2285256CC1007F3A2F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09230AC-D

## ADs that name it (0)

None.

## Approved models (5)

- Cessna Aircraft Company F172F ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))
- Cessna Aircraft Company F172G ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))
- Cessna Aircraft Company F172H ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))
- Cessna Aircraft Company F172K ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))
- Cessna Aircraft Company F172L ([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: SA09230 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 Ali Regulations.

Original Product I ype Certifcate Number: A4EU Make: REIMS AVIATION S.A. MODELS CESSNA Model: F172F, F172G, F172H, F172K, AND F172L Description of Type Design Change:

Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-686, according to Bulletin No. 786, dated 5-28-97 and Master Drawing List No. 92999, dated 5-28-97 or later FAA Approved revisions of the above data (14 Volt System).

FAA/DAS Approved Supplemental Flight Manual, P/N 891410, dated 6-04-97 is required for Keims Aviation S.A. Models Cessna F172F, F172G, F172H, F172K, and F172L 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.

Date of Application: 5-30-97 Date Reissued:

Date of Issuance: 6-04-97 Date Amended:

By Direction of the Administrator FEDERAL AVIATION iccion · TOMINISTRATOE DAS Staff Coordinator, DAS 5 SW William J. Thomas (Title)

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 code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 4, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/34/56/34569a597ccd902ada6e64c7f9463baaaa4ec68db724a2eb96dc1ecb32774afe)

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