# STC SA8394SW-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, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: TCDS 638
- Certificate PDF: https://openairdocs.org/files/sha256/0e/d7/0ed7eb4602fd1aad618e83347b721f87ec1400d7ce6dd2dddcd2c97507f2327a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B4EF97675DD2B1AE85256CC20058E77B.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA8394SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company D17R (Army UC-43A) (TCDS 638)

## What the certificate says

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

Aried Sous of A cia Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA8394SW-D This certificate issued to: S-TEC Corporation 946 Pegram Mineral Wells, TX 76067 Port 23 sfithe Federal Av i ation Regulations Original Product -Type Contificate Number: 638 Model: D17R (UC-43А) Description of Type Design Change:

Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model SI-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 model 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 (Title)

17.

Pal Foom 81 10-2 (10-681

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA83945W-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Supplemental Flight Manual, P/N 891073, dated 5-23-94 is required for Beech Model D17R (UC-43A) And The Above Model When Modified With IR-985-APS-4 Engine 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.

**PAGE 20F 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, Stale, 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)

- May 23, 1994: Issued, Current. [certificate](https://openairdocs.org/files/sha256/0e/d7/0ed7eb4602fd1aad618e83347b721f87ec1400d7ce6dd2dddcd2c97507f2327a)

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