# STC SA09314AC-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-755-20/30.
- Applied: December 8, 1997
- Status date: December 10, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21)
- Certificate PDF: https://openairdocs.org/files/sha256/15/26/15262f071e09d1396156789863dceb05076a95b67d9b3d02950565d9454dde6e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6CFFCC83D623019885256CC1007F3A81.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09314AC-D

## ADs that name it (0)

None.

## Approved models (4)

- Cessna Aircraft Company 210 ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Cessna Aircraft Company 210A ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Cessna Aircraft Company 210B ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Cessna Aircraft Company 210C ([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: SA09314AC-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 following product with the limitations and conditions therefor as sheciped hereon meets the aimorthiness requiements of I art 3 of the Cort to Kegulations.

Original Product I ype Certificate Number: 3A21 Make: Cessna Model: 210, 210A, 210B, and 210C Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-755-20/30, according to Bulletin No. 855, dated 12-05-97 and Master Drawing List No. 921053, dated 12-05-97 or later FAA Approved revisions of the above data (14 Volt System).

FAA/DAS Approved Supplemental Flight Manual, P/N 891611, dated 12-10-97 is required for Cessna Models 210, 210A, 210B, and 210C 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: 12-08-97 Date Reissued:

Date of asnance: 12-10-97 Date Amended:

By diction of the st dminishater FEDERAL AVIATION Wiin Shones Signatur TOMINISTRATOR William J. Thomas DAS Staff Coordinator, DAS 5 SW (Fitle) 000, or Imprisonment not exceeding 3 years, or both.

FAA Form 8(10-2110-68) Page 1 of 2

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09314AC-D Limitations and Conditions: (con't.)

FAA/DAS Approved Supplemental Flight Manual, P/N 891612, dated 12-10-97 is required for Cessna Models 210, 210A, 210B, and 210C 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 by the installer.

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

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) fron (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)

- December 10, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/15/26/15262f071e09d1396156789863dceb05076a95b67d9b3d02950565d9454dde6e)

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