# STC SA5203SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 40/50 single and two axis automatic flight guidance system, Model ST-191
- Applied: August 1, 1983
- Status date: April 21, 1994
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-777](https://openairdocs.org/tcds/A-777)
- Certificate PDF: https://openairdocs.org/files/sha256/9c/fb/9cfb5c264235dfe45e693e1277b034726c35ec5be57c30035a4236e0147bf3b5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FD1DB1137481BF2885256CC20012277F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5203SW-D

## ADs that name it (0)

None.

## Approved models (7)

- Beechcraft Corporation A35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation B35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation C35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation D35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation E35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation F35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation G35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))

## What the certificate says

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

Anita. Sous d 28 na Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA520354-0 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 as specified hereon mels the airwonthiness reguinements of Port 3 of the CIVIl Air Regulations.

Original Product -Type Cortificato Numbon: A-777 Make: BEECH Model: A35, B35, C35, D35, E35, F35, and 635 Description of Type Design Change:

Installation of S-TEC System 40/50 Single and Two Axis Automatic Flight Guidance Systems, Model ST-191, according to Bulletin No. 291, Revision 3, dated 4-15-94 and Master Drawing List No. 92218, Revision C, dated 4-15-94 or later FAA Approved revisions of the above data (14 Volt System).

1. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89260, dated 9-16-83 is required for S-TEC System 40 for Beech Models A35, B35, C35, D35, E35, F35, and G35 or later FAA Approved revisions of the above supplement.

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

Thomas DAS Staff Coordinator, DAS 5 SW (Title)

**PAA FOR 8110-2 (10-681**

Hrited States of Amenra Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA52035W-D Limitations and Conditions: (con't.)

2. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89260-1, dated 4-21-94 is required for S-TEC System 40 for Beech Models C35, D35, E35, F35, and G35 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 891058, dated 4-21-94 is required for S-lEl system 4U tor Beech Models A35 and 835 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 89261-1, dated 4-21-94 is required for S-TEC System 50 for Beech Models C35, D35, E35, F35, and G35 or later FAA Approved revisions of the above supplement.

5. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 891059, dated 4-21-94 is required for S-TEC System 50 for Beech models A35 and B35 or later FAA Aprpoved revisions of the above supplement.

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

FAA FORM 81102-1 (10-09) This certificate may be transferred in accordance with till "1.t?.

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)

- April 21, 1994: Amended, Current. [certificate](https://openairdocs.org/files/sha256/9c/fb/9cfb5c264235dfe45e693e1277b034726c35ec5be57c30035a4236e0147bf3b5)

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