# STC SA09306AC-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-737-20/30.
- Applied: November 10, 1997
- Status date: November 12, 1997
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A3SO](https://openairdocs.org/tcds/A3SO)
- Certificate PDF: https://openairdocs.org/files/sha256/c0/f7/c0f7ba1ee13e0a47e1c3ee01031d5a687958094ec98e92cb5a91d07e42f9139b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AD33D506A718F97C85256CC1007F3A79.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09306AC-D

## ADs that name it (0)

None.

## Approved models (5)

- Piper Aircraft Inc. PA-32-301 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32-301T ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32R-301 (HP) ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32R-301 (SP) ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32R-301T ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))

## 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: SA09306AC-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 speciped hereon meets the aiworthiness requiroments of Part 3 of the Civid d is Regulations.

Original Product Fype Certifcate Number: A3SO Make: Piper Model: PA-32-301, PA-32-301T, PA-32R-301, and PA-32R-301T Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-737-20/30, according to Bulletin No. 837, dated 11-06-97 and Master Drawing List No. 921045, dated 11-06-97 or later FAA Approved revisions of the above data (14 Volt System).

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891567, dated 11-12-97 is required for S-TEC System 20 for Piper Models PA-32-301, PA-32-301T, PA-32R-301, and PA-32R-301T or later FAA Approved revisions of the above supplement.

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

Date of Application: 11-10-97 Date Reissued:

Date of Issuance: 11-12-97 Date Amended:

By Direction of the Administrator FEDERAL AVIATION Wiin Home TOMINISTRATIOR William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09306AC-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891568, dated 11-12-97 is required for S-TEC System 30 for Piper Models PA-32-301, PA-32- 301T, PA-32R-301, and PA-32R-301T 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) Page 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) 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)

- November 12, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/c0/f7/c0f7ba1ee13e0a47e1c3ee01031d5a687958094ec98e92cb5a91d07e42f9139b)

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