# STC SA09232AC-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, Model ST-687-20/30.
- Applied: May 28, 1997
- Status date: May 30, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21)
- Certificate PDF: https://openairdocs.org/files/sha256/71/b0/71b0a42ec3d568cccbf601ac346ba71957b5328e885e7921f7bc63b7f21bd293
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ECB2C4D09F7A8B7C85256CC1007F3A30.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09232AC-D

## ADs that name it (0)

None.

## Approved models (6)

- Cessna Aircraft Company 210G ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Cessna Aircraft Company 210H ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Cessna Aircraft Company 210J ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Cessna Aircraft Company T210G ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Cessna Aircraft Company T210H ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Cessna Aircraft Company T210J ([TCDS 3A21](https://openairdocs.org/tcds/3A21))

## 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: SA09232AC-D This certificate 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 folloving product with the limitations and conditions therefor as spocifed hereen meets the aivorhiness requiements of Part art of the bivid I in Regulations.

Original Product I spe Certificate Number: 3A21 Make: Cessna Model: 210G, T210G, 210H, T210H, 210J, AND T210J Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-687-20/30, according to Bulletin No. 787, dated 5-27-97 and Master Drawing List No. 921000, dated 5-27-97 or later FAA Approved revisions of the above data (14 Volt System).

1. Also eligible on Models T210G, T210H, and T210J When Modified Per STC SA2689SW (RAM Modification).

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

Date of Application: 5-28-97 Date Reissued:

Date of Issuance: 5-30-97 Date Amended:

FEDERAL AVIATION * 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: SA09232AC-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Supplemental Flight Manual, P/N 891412, dated 5-30-97, is required for Cessna Models, 210G, T210G, 210H, T210H, 210J, and T210J And Models T210G, T210H, and T210J When Modified Per STC SA2689SW (RAM Modification) for S-TEC System 20 or later FAA Approved revisions of the above supplement.

3. FAA/DAS Approved Supplemental Flight Manual, P/N 891413, dated 5-30-97, is required for Cessna Models, 210G, T210G, 210H, T210H, 210J, and T210J And Models T210G, T210H, and T210J When Modified Per STC SA2689SW (RAM Modification) for S-TEC System 30 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 8110-2-1(10-69) Page 2 of 2

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

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)

- May 30, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/71/b0/71b0a42ec3d568cccbf601ac346ba71957b5328e885e7921f7bc63b7f21bd293)

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