# STC SA8393SW-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-535.
- Applied: May 19, 1994
- Status date: May 23, 1994
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-649](https://openairdocs.org/tcds/A-649)
- Certificate PDF: https://openairdocs.org/files/sha256/7a/84/7a84d3983914612b9b64d3553cb164872f552f4651019a07c134d334761f0725
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BC2F30EDA159326785256CC20058E77A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA8393SW-D

## ADs that name it (0)

None.

## Approved models (5)

- Raytheon Aircraft Company D17S (Army UC-43) ([TCDS A-649](https://openairdocs.org/tcds/A-649))
- Raytheon Aircraft Company D17S (Army UC-43B) ([TCDS A-649](https://openairdocs.org/tcds/A-649))
- Raytheon Aircraft Company D17S (Navy GB-1) ([TCDS A-649](https://openairdocs.org/tcds/A-649))
- Raytheon Aircraft Company D17S (Navy GB-2) ([TCDS A-649](https://openairdocs.org/tcds/A-649))
- Raytheon Aircraft Company SD17S ([TCDS A-649](https://openairdocs.org/tcds/A-649))

## What the certificate says

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

Ariad So of A cra Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5A83954-0 This certificate issued to: S-TEC Corporation 946 Pegram Mineral Wells, TX 76067 solifes that the crangs in the typs desigo for the folowing produce with the limilations and conditions shorefor as specified hereon meels the airworthiness requirements of Port 23 sf the Federal Aviation Regulations Original Product -Type Contificater Number: A-649 Make: BEECH Model: D17S (UC-43, UC-43B, G=1, G-2), AND SD175 Description of Type Design Change:

Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-535, according to Bulletin No. 635, dated 5-18-94 and Master Drawing List No.

92685, dated 5-18-94 with Optional Flight Director/Steering Horizon or later FAA Approved revisions of the above data (14 Volt System).

1. Also eligible on the above models when modified with IR-985-APS-4 Engine.

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

Thomas DAS Staff Coordinator, DAS 5 SW (Tille)

47.

Fan Foon 8110-2 (10-68)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Numbex 5A839354-0 Limitations and Conditions: (con't.)

2. FAA/DAS Approved Supplemental Flight Manual, P/N 891072, dated 5-23-94 1s required for Beech Models D17S (UC-43, UC-43B, G-1, G-2) and SD17S And The Above Models When Modified With IR-985-APS-4 Engine or later FAA Approvec revisions of the above supplement.

3. Compatibility of this modification with other previously approved modifications must be determined by the installer.

FAA FORM 811U2-1 (10-69) This certificate may be transferred in accordance with fill !1.17 PAGE 2 OF 2 PAGES

TRANSFER ENDORSEMENT Transter 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 OF-205-579

## Every issue (1)

- May 23, 1994: Issued, Current. [certificate](https://openairdocs.org/files/sha256/7a/84/7a84d3983914612b9b64d3553cb164872f552f4651019a07c134d334761f0725)

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