# STC SA09422AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC Yaw Damper System, Model ST-870.
- Applied: November 9, 1999
- Status date: May 10, 2000
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A17WE](https://openairdocs.org/tcds/A17WE)
- Certificate PDF: https://openairdocs.org/files/sha256/98/10/9810d34b001af7c9000a86e58473d5f280c0c27dc25a25dbf30249bd292af087
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1D7329772084EB7E85256CC1007F3AF3.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09422AC-D

## ADs that name it (0)

None.

## Approved models (4)

- Aerostar Aircraft Corporation PA-60-600 (Aerostar 600) ([TCDS A17WE](https://openairdocs.org/tcds/A17WE))
- Aerostar Aircraft Corporation PA-60-601 (Aerostar 601) ([TCDS A17WE](https://openairdocs.org/tcds/A17WE))
- Aerostar Aircraft Corporation PA-60-601P (Aerostar 601P) ([TCDS A17WE](https://openairdocs.org/tcds/A17WE))
- Aerostar Aircraft Corporation PA-60-602P (Aerostar 602P) ([TCDS A17WE](https://openairdocs.org/tcds/A17WE))

## 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: SA09A22AC-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 Federal & riation Regulations.

Original Product I ype Certifeate Nunter e A17WE Make: Aerostar Model: PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Acrostar 601P), and PA-60-602P Description of Type Design Change: (Aerostar 602P) Installation of S-TEC Yaw Damper System, Model ST-870, according to Bulletin No. 970, dated 11-09-99 and Master Drawing List No. 921166, dated 11-09-99 or later FAA Approved revisions of the above data (28 Volt System).

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

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of Application: 11-09-99 Date Reissued:

Late of ismance: 5-10-00 Date Amended:

By Direction of the Administrator FEDERAL AVIATION (Signature) TOMINISTRATO Michael Keiran DAS Staff Coordinator, DAS 5 SW (Title)

This certificate may be transferred in accordance with FAR 21.17.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09422AC-D Limitations and Conditions: (con't.)

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891903, dated 5-10-00 is required for Aerostar models PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P), and PA-60-602P (Aerostar 602P) 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.

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 10, 2000: Issued, Current. [certificate](https://openairdocs.org/files/sha256/98/10/9810d34b001af7c9000a86e58473d5f280c0c27dc25a25dbf30249bd292af087)

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