# STC SA4424SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60 two axis flight guidance system Model ST-046 with optional autotrim system
- Applied: July 13, 1981
- Status date: July 21, 1981
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A17](https://openairdocs.org/tcds/3A17)
- Certificate PDF: https://openairdocs.org/files/sha256/91/ae/91aeb2bd9c582fa300459d1121676635bdf4b0e3700e2b634f83eb5e176a6e3a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/560B8564B9A4543C85256CC2000E3C65.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4424SW

## 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 of amcrica Bepartment of transportation—Jpetoal aviation administration Supplemental "Cgpe Certificate SA4424SW Pr°ject A5354sw-°s FKP-213 S-TEC Corporation Rt. 3, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 ^J^^e^^ jyte&j^^^^^ 3 ^j&e, Civil Air rcchtct —— ^te^'^^i^ca^^um^' •: 3A17 Cessna 172RG _^Wy^wy[^^_^^^ Installation of S-TEC System 60 Two Axis Flight Guidance System, Model ST-046 with Optional Autotrim System according to Bulletin No. 149, dated 7-7-81 and Master Drawing List No. 9265, dated 7-7-81 with Optional Flight Director/Steering Horizon Installation according to Bulletin No. 120, Revision 3, dated 5-21-81 and Master Drawing List No. 9209 Revision C, dated 5-21-81, or later FAA approved revision. (28 Volt System) Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement for Cessna Model 172RG with S-TEC System 60 Two Axis Automatic Flight Control System, FAA Approved P/N 8977, dated 7-21-81, is required.

Compatibility of this modification with other previously approved modificationsmust be determined by the installer.

Sttfdmvru&faaJw^ July 13, 1981 July 21, 1981 (Signature) /.^JJerrp. Watson A*" Chief, Engineering and Manufacturing Branch ^ (Title)

FAA Foul a 1 1 0_? 11O-AfllFAA FOKM 8110-2 (10-68)

## Every issue (1)

- July 21, 1981: Issued, Current. [certificate](https://openairdocs.org/files/sha256/91/ae/91aeb2bd9c582fa300459d1121676635bdf4b0e3700e2b634f83eb5e176a6e3a)

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