# STC SA4477SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60 pitch stabilization system, Model ST-062 with optional autotrim system
- Applied: August 13, 1981
- Status date: October 5, 1981
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A17](https://openairdocs.org/tcds/3A17)
- Certificate PDF: https://openairdocs.org/files/sha256/50/23/5023eb97db837927e15e84948142ae2b50a01c4b67d2215ea99c5cc9f468e2cf
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1AAAF1A9AE0A47A585256CC2000E3CB1.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4477SW

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 172RG ([TCDS 3A17](https://openairdocs.org/tcds/3A17))

## 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.

United States or America iSlG&t&fa&v Btpartment of transportation— federal atnation administration Supplemental t^pe Certificate isKttrrvvev SA4477SW Project A5450SW-DS~^ L j S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 ,<^^^a^^ Civil Air 3A17 Cessna 172RG installation of S-TEC System 60 Pitch Stabilization System, Model ST-062 with Optional Autotrim System according to Bulletin No. 165, dated 8-03-81 and Master Drawing List No. 9267, dated 8-03-81, or later FAA approved revision. (28 Volt System)

1. Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement P/N 8979 dated 10/5/81 for Cessna 172RG with S-TEC System 60 Pitch Stabilization System (28 Volt System) is required.

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

August 13, 1981 October 5, 1981 ' Jt-U/^t/i, _/-jidf rftdJftsd.' _/ aff tttfistifita- ./J,U'Jatref/'<Srr~}*/ne .tff/t/K'ntAJra/i'r (Signature) Don P. Watson Chief, Engineering and Manufacturing Branch (Title)

FAAFoKM 81 10-2(10-48)

## Every issue (1)

- October 5, 1981: Issued, Current. [certificate](https://openairdocs.org/files/sha256/50/23/5023eb97db837927e15e84948142ae2b50a01c4b67d2215ea99c5cc9f468e2cf)

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