# STC SA8399SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60 two axis automatic flight guidance system, Model ST-532, with optional automatic electric trim system.
- Applied: June 27, 1994
- Status date: July 1, 1994
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A13](https://openairdocs.org/tcds/2A13)
- Certificate PDF: https://openairdocs.org/files/sha256/25/70/257030c07c5a9107f079efb56000337cc5881f0991faebd095a69918391517e4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/90FBA26F098E044F85256CC20058E780.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA8399SW-D

## ADs that name it (0)

None.

## Approved models (4)

- The New Piper Aircraft Inc. PA-28-161 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- The New Piper Aircraft Inc. PA-28-181 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- The New Piper Aircraft Inc. PA-28-201T ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- The New Piper Aircraft Inc. PA-28-236 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))

## What the certificate says

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

Aried Soo a 9 min Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5A839954-0 This certificate issued to: S-TEC Corporation 946 Pegram Mineral Wells, TX 76067 Certifies that the change in the type design for the following product with the limitations and conditions shomfor as specifed horeon meets the sinworthiness requiremonis of Part 3 sf the CiVIl Air Regulations Original Product -Type Contificato Number: 2A13 Make: PIPER Model: PА-28-161, PА-28-181, PА-28-2017, Description of Type Design Change: AND PA-28-236 Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-532, with Optional Automatic Electric Trim System according to Bulletin No.

632, dated 6-24-94 and Master Drawing List No. 92692, dated 6-24-94, with Optional Flight Director/Steering Horizon, or later FAA Approved revisions of the above data (28 Volt System).

1. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891080, dated 7-01-94 for Piper Models PA-28-161, PA-28-181, and PA-28-236 or later FAA Approved revisions of the above supplement.

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

inomas DAS Staff Coordinator, DAS 5 SW (Title) 97 FAA 708 81 10-2 (10-68)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA839954-0 Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891081, dated 7-01-94 for Piper Model PA-28-201T 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.

t7 PAGE 2 OF 2 PAGES

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 and street) (City, State, and ZIP code) Extent of Authority (if licensing agreement): - Date of Transfer:

Signature of grantor (In ink): - U.S. GOVERNMENT PRINTING OFFICE: 1966 OF-205-579

## Every issue (1)

- July 1, 1994: Issued, Current. [certificate](https://openairdocs.org/files/sha256/25/70/257030c07c5a9107f079efb56000337cc5881f0991faebd095a69918391517e4)

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