# STC SA5173SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60 pitch stabilization system ST-051 with optional automatic electric trim system
- Applied: April 22, 1983
- Status date: June 29, 1983
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/a3/fe/a3fee2777c7db5a9988a7fec1c92ac60eb7805d938f0f3341d54c30ea6a2695b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6B2634D7B2D85AF785256CC200122739.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA5173SW-D

## 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.

Hnitri goto of 3«rrica Bepartment of transportation— federal atnation Administration Supplemental t:gpe Certificate , sl£*a*da dp*aina4 \Ji*x/uc£ SA5173SW-D S-TEC Corporation Rt. 4, Bldg. 946 Wo Hers Industrial Complex Mineral Wells, TX 76067 3 Civil Air 3A15 BEECH 35-33, 35-A33, 35-B33, 35-C33, 35-C33A, E33, E33A, E33C, F33, F33C, G33, AND F33A, S/N CE-315 AND BELOW.

Installation of S-TEC System 60 Pitch Stabilization System, Model ST-051 with Optional Automatic Electric Trim System according to Bulletin No. 154, Revision 2, dated 2-14-83 and Master Drawing List No. 9246, Revision B, dated 2-14-83 and/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 8952-1, dated 6-29-83 is required for Beech Models 35-C33, 35-C33A, E-33, E33A, F33, F33C, E33C, G33 and F33A, S/N CE-315 and below.

(See Continuation Sheet, Page 2, a part of this STC) .- 4-22-83 6-29-83 (Signahoi) Harold W. Holdeman DAS Staff Coordinator, DAS 5 SW (TitU)

Tkit ttrtificatt may h trtoaftmd in aceorjonct with FAR 21.47.

FAA FOMI •! 10-2 (10-M)

ttratrd Stow of 2ncrto Bepartmtnt of Transportation— .federal Soiation administration Supplemental ^Cgpe Certificate(Continuation £heet) SA5173SW-D (Con't) 2 FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89121-1, dated 6-29-83 is required for Beech Models 35-33, 35-A33, and 35-B33 and/or later FAA Approved revisions of the above supplement.

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

FAA FORM stio-2-1 (1O-69) This ctrtifcalt may bt transferred in accordance with FAR 21.47.

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, State, and Z.IP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 29, 1983: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a3/fe/a3fee2777c7db5a9988a7fec1c92ac60eb7805d938f0f3341d54c30ea6a2695b)

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