# STC SA4139SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC system 60 two axis flight guidance system Model ST-007 with optional autotrim system
- Applied: June 3, 1980
- Status date: November 5, 1981
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/6b/0a/6b0ab65c93f5c285a8401fc139bebb60fc87c3c1b47b44d1e08a776718b0a237
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/928695FE6B77A44186257DF80066673A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4139SW

## ADs that name it (0)

None.

## Approved models (4)

- Beechcraft Corporation S35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35B ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Bnitd grates of amcrica Bepartment of transportation— federal 2toiation administration >upplemental t^pe Certificate SA4139SW S-TEC Corporation Route 4, Building 946 Wolters Industrial Complex Mineral Wells, Texas 76067 'Jfasfy/wsZeAstpwfwJfofittcwtv^fa^^ '^k*^<s«!^'«<«<?W'^^ 3 ^J&e' Civil Air 3A15 Beech S35, V35, V35A, V35B and these models when modified by STC SA1035WE (Turbocharged Engine) -u/i^^i^ct^^a^ia^/:

nstallation^bf S-TEC System 60 Two Axis Flight Guidance System, Model ST-007 with Optional Autotrim System according to Bulletin No. 107, Revision 7, dated 9-25-81 and Master Drawing Ust No. 9208, Revision G, dated 9-25-81 with Optional Flight Director Steering Horizon Installation according to Bulletin No. 120, Revision 1, dated 1-07-81 and Master Drawing Ust No. 9209, Revision A, dated 1-07-81 and Optional Vertical Speed Indicator/Selector in accordance with Bulletin No. 121, dated 6-2-80 and Master Drawing Ust No. 9210, dated 6-2-80, or later FAA approved revision. (14 Volt System) See Continuation Sheet, page 2 of this STC.

June 3, 1980 June 16, 1980 '^^en^^va^^^^^f^i^^^nf^AA^t^/f^^ri^^i/^i^^^iec^jU^^t^^ 'sfa<?ni>nM&0n;da&^*<dA>efruft^seA^a66i4^^ •S&^frumMi^a^p^^^e' 9/9/80; 12/1/80; 1/30/81;

6/4/81; 11/5/81 Revision 5 .A-'V-^VV*--f—^~ P. Watson _ Chief, Aircraft CertificationDivision (Title)

**FAA FOIM 8110-2 (10-68)**

ttntoi £tatu of anrcrira Bepartment of transportation—federal atrtation administration ^uppltmtntal t;gpe Certificate(Continuation £heet) <y\M/WlweW SA4139SW Revision 5 Limitations and Conditions:

1. Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement, P/N 8907, dated June 16, 1980, Is required with S-TEC System 60 Two Axis Flight Control System Model ST-007 for Beech Models S35, V35, V35A, and V35B.

2. Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement, P/N 8907-1, dated September 9, 1980, Is required with S-TEC System 60 Two Axis Automatic Flight Control System for Beech Models S35, V35, V35A, and V35B and the above models when modified In accordance with STC SA1035WE (Turbocharged Engine)

3. Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement P/N 8907-2, dated January 30, 1981, Is required with S-TEC System 60 Two Axis Automatic Flight Control System with Optional Autotrim System for Beech Models S35, V35, V35A, and V35B and the above models when modified in accordance with STC SA1035WE (Turbocharged Engine)

4. Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement, P/N 8907-3, dated November 5, 1981, Is required with S-TEC System 60 Two Axis Automatic Flight Control System with Optional Autotrim System (for use with Roll Servo P/N 0105-R9) for Beech Models S35, V35, V35A, and V35B and the above models when modified in accordance with STC SA1035WE (Turbocharged Engine).

5. Compatibility of this modification with other previously approved modifications must be determined by the Installer.

FAA FORM Btio-2-1 (1O-69) 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, Slate, and ^IP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, Stale, and <7P code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- November 5, 1981: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/6b/0a/6b0ab65c93f5c285a8401fc139bebb60fc87c3c1b47b44d1e08a776718b0a237)

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