# STC SA6053SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60 two axis automatic flight guidance system, Model ST-021, with Optional automatic electric trim system
- Applied: December 18, 1985
- Status date: February 11, 1992
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A15](https://openairdocs.org/tcds/1A15)
- Certificate PDF: https://openairdocs.org/files/sha256/ee/9e/ee9e622c0f6bc7fcbfdac956119e80d8984e88aba69dd3d40ef8fe4d83769619
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ECAAF62F63D8B0BB85256CC200569E33.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA6053SW-D

## ADs that name it (0)

None.

## Approved models (4)

- Piper Aircraft Inc. PA-24 ([TCDS 1A15](https://openairdocs.org/tcds/1A15))
- Piper Aircraft Inc. PA-24-250 ([TCDS 1A15](https://openairdocs.org/tcds/1A15))
- Piper Aircraft Inc. PA-24-260 ([TCDS 1A15](https://openairdocs.org/tcds/1A15))
- Piper Aircraft Inc. PA-24-400 ([TCDS 1A15](https://openairdocs.org/tcds/1A15))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Hains Sons & 2 Ta Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA60535W-D This certificate issued to: S-TEC Corporation 946 Pegram Wolters Industrial Park Mineral Wells, Texas 76067 Certifies that the change in the type design for the following product with the limitations and conditions shovefor es specifed hoveon meets the airworthiness requiremonts of Port 3 of the Civil A ir Regelations.

Original Product -TypoCertificato Numbos: 1A15 Make: PIPER Model:

PA-24 (PA-24-180), PA-24-250, PA-24-260, Description of Type Design Change: AND PA-24-400 Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-021, with Optional Automatic Electric Trim System, according to Bulletin No.

124, Revision 9, dated 1-27-92 and Master Drawing List No. 9239, Revision I, dated 1-27-92 with Optional Flight Director/Steering Horizon and/or FAA Approved revisions of the above data (14 Volt System).

Also eligible on Piper Models PA-24 (PA-24-180), PA-24-250, and PA-24-260 when Modified In Accordance With STC SA4-1351 or STC SA4-1235 As Applicable (Wing Tip Tanks).

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

17.

PAR Hoo 8110-2 (10-68)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA60535W-D, Revision 1 Limitations and Conditions: (con't.)

2. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 8943-3, dated 1-10-86 is required for Piper Models PA-24 (PA-24-180), PA-24-250, and PA-24-260, S/N 24-4803 and Below (Except S/N 24-4783) And The Above Models When Modified In Accordance With STC SA4-1351 or STC SA4-1235 As Applicable (Wing Tip Tanks) and/or later FAA Approved revisions of the above supplement.

3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 8943-4, dated 2-11-92 is required for Piper Models PA-24 (PA-24-180), PA-24-250, and PA-24-260 And The Above Mode!S When Modified In Accordance With STC SA4-1351 or STC SA4-1235 As Applicable (Wing Tip Tanks) and/or later FAA Approved revisions of the above supplement.

4. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89649, dated 1-10-86 is required for Piper Model PA-24-400 and/or later FAA Approved revisions of the above supple-

5. 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) (-Vumber and streel) (Cily, Stake, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and sireel;

(City, State, and ZIP code) Extent of Authority (if licensing agreement):

Date of Transfer: _ Signature of grantor (In ink): -

## Every issue (1)

- February 11, 1992: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ee/9e/ee9e622c0f6bc7fcbfdac956119e80d8984e88aba69dd3d40ef8fe4d83769619)

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