# STC SA09205AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC yaw damper system, Model ST-660.
- Applied: March 7, 1997
- Status date: April 17, 1997
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A34CE](https://openairdocs.org/tcds/A34CE)
- Certificate PDF: https://openairdocs.org/files/sha256/81/fe/81fea6528f25f89a5720f75c7c027730d0c29a7637301f5ceae05e04d6c74237
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BB43E9312D3078D485256CC1007F3A12.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09205AC-D

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company T303 ([TCDS A34CE](https://openairdocs.org/tcds/A34CE))

## 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: SA09205 AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 I art 23 of the I odoral id viation Regulations.

Original Product I ype Certifcate Numbor: A34CE Make: CESSNA Model: T303 Description of Type Design Change:

Installation of S-TEC Yaw Damper System, Model ST-660, according to Bulletin No. 760, dated 3-06-97 and Master Drawing List No. 92979, dated 3-06-97 or later FAA Approved revisions of the above data (28 Volt System).

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement P/N 891349, dated 4-17-97, is required for Cessna Model T303 or later FAA Approved revisions of the above supplement.

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

Date of Application: 3-07-97 Date roasted:

Date of Issuance: 4-17-97 Date Amended:

FEDERAL AVIATION TOMINISTRATIO DAS Staff Coordinator, DAS 5 SW William J. Thomas (Title)

PAA Form 8110-2(10-68) Page 1 of 1

INSTRUCTIONS: The transfer endersement below may be used to notity the approptiate FAA Regional office of the transfer of the Supplemental Type Certificate.

The FAA will reissue the certiticate in the name of the transferee and forward it To bime

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 codel Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- April 17, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/81/fe/81fea6528f25f89a5720f75c7c027730d0c29a7637301f5ceae05e04d6c74237)

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