# STC SA4158SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC system 60 two axis automatic flight guidance system, Model ST-009 with optional autotrim system
- Applied: July 15, 1980
- Status date: March 19, 1982
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/b3/93/b393c7d5ffa5ddc60d03c63fb408b51fd3f814a30422a3f52dfa620d8f5c83dc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4341D7A127D3BF6786257DF8006E7151.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4158SW

## ADs that name it (0)

None.

## Approved models (12)

- Beechcraft Corporation 35-33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-A33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-B33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-C33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-C33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation E33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation E33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation E33C ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation F33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation F33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation F33C ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation G33 ([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.

Unitri grates of amcrica Bcpartmcnt of transportation —.federal 3toiation administration Supplemental t^gpe Certificate <yKuyryW€w SA4158SW Project A5696SW-DS S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 &wf^jA&j[ic>6U>^^ jifi*&ft^Jie>rt*7n'/mc*&JfoJa^^ 3 <slea*da&<mA'.

£J>*iai-na/ iJrcctuef —— Civil Air 3A15 Beech

35.33 35-A33, 35-B33, 35-C33, 35-C33A, E33,E33A, E33C, F33, F33A, S/N CE-115 and below, F33C, G33 of s-TEC System 60 Two /xis Automatic Flight Guidance System, Model ST-009 with Optional Autotrim System, according to Bulletin No. 109, Revision 5, dated 2-25-82 and Master Drawing List No. 9213 Revision E, dated 2-25-82 with Optional Flight Director Steering Horizon;

or later FAA approved revision. (14 Volt System) See Continuation Sheet, page 2 of this STC.

;£cMri^ S%drru#uAJr<z£>^J(p^ihe<

• July 15, 1980 July 29, 1980 . 2/3/81; 4/3/81; 3/19/82 Revision 3 (Signature) ^ Don P. WatsonActing Chief, Aircraft Certification

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

ttnittd Starts of arnica Bepartment of transportation— federal Striation administration topplemtntal t:jp Certificate(Continuation £heet) tSVMWlWeW SA4158SW Revision 3 Limitations and Conditions :

1. Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement, P/N 8910 dated July 29, 1980, is required for Beech Models 35-C33, 35-C33A, E33, E33A, E33C, F33, F33C, G33, F33A S/N CE-315 and Below with S-TEC System 60 (Two Axis) Flight Guidance System, Model ST-009.

2. Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement, P/N 8910-1 dated 4/3/81, is required for Beech Models 35-C33, 35-C33A, E33, E33A, E33C, F33, F33C, G33, F33A S/N CE-315 and Below with S-TEC System 60 (Two Axis) Flight Guidance System, Model ST-009 and Optional Autotrim System.

3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89119 dated March 19, 1982, for Beech Models 35-33, 35-A33, and 35-B33 with S-TEC System 60 Two Axis Automatic Flight Guidance System.

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

FAA FORM Biio-2-1 (1O-69) PAGE 2OF 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 <?/> code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ?JP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- March 19, 1982: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/b3/93/b393c7d5ffa5ddc60d03c63fb408b51fd3f814a30422a3f52dfa620d8f5c83dc)

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