# STC SA09265AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC Manual Electric Trim System, Model ST-705.
- Applied: August 8, 1997
- Status date: August 15, 1997
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO)
- Certificate PDF: https://openairdocs.org/files/sha256/a0/b0/a0b05ada1a926473c7425e7f26123f3ad2811fb0d772a06e9e9ea6a294d0efc1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BDBD8DB3E3AC231A85256CC1007F3A50.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09265AC-D

## ADs that name it (0)

None.

## Approved models (3)

- Piper Aircraft Inc. PA-31 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- Piper Aircraft Inc. PA-31-300 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- Piper Aircraft Inc. PA-31-325 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))

## 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: SA09265 AC-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 specifed hereon meets the aiwothiness requrements of Part 3 of the Civ tir Regulations.

Original Product I ype Celificate Number: A20SO Make: Piper Model: PA-31, PA-31-300, and PA-31-325 Description of Type Design Change:

Installation of S-TEC Manual Electric Trim System, Model ST-705, according to Bulletin No. 805, dated 8-06-97 and Master Drawing List No. 921017, dated 8-06-97 or later FAA Approved revisions of the above data (28 Volt System).

1. Also eligible on Models PA-31 and PA-31-300 When Modified Per STC SA970S0 (350 H.P. Colemill Conversion).

2. Also eligible on Model PA-31-325 When Modified Per STC SA00048SE (Vortex Generator System).

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

Date of Application: 8-08-97 Date Reissued:

Date of Issuance: 8-15-97 Date Amended:

By Direction of the Administrator FEDERAL AVIATION Winni Chernes Signatur TOMINISTRATIO 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: SA09265AC-D Limitations and Conditions: (con't.)

3. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891488, dated 8-15-97 is required for Piper Models PA-31 and PA-31-300 And The Above Models When Modified Per STC SA970S0 (350 H.P. Colemill Conversion) and Model PA-31-325 And The Above Model When Modified Per STC SA00048SE (Vortex Generator System) or later FAA Approved revisions of the above supplement.

4. 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

INSTRUCTIONS: The trarsfer endorsement below may be used to notify the appropriate FAA Regional Office of the transfer of the Supplemental Type Certificate.

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

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and 2IP 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)

- August 15, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a0/b0/a0b05ada1a926473c7425e7f26123f3ad2811fb0d772a06e9e9ea6a294d0efc1)

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