# STC SA4458SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 60, single axis, flight guidance system, Model ST-045
- Applied: July 30, 1981
- Status date: September 3, 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/c4/31/c431a19b127b4bbfe3461e804778b8f1104a073792223d6c933588264d9454f4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A9156D81AEBFDF7685256CC2000E3C95.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4458SW

## 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.

ttnittd States of amenta Bcpartment of transportation-federal atoiation administration Supplemental 'Cjp Certificate SA4458SW Project A5398SW-DSFKP-213 Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 ^^^ty/wdeAsl^fl^jA&fi&cwi^^/wv^^ Civil Airt 3A17 Cessna 172RG of S-TEC System 60, Single Axis, Flight Guidance System, Model ST-045 according to Bulletin No. 148, dated 7-29-81 and Master Drawing List No. 9266, dated 7-29-81, or later FAA approved revision.

(28 Volt ystem) Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement P/N 8978 dated 9-3-81 is required with S-TEC System 60 Single Axis Automatic Flight Control System, Model ST-045. (28 Volt System) Compatibility of this modification with other previously approved modifications must be determined by the installer.

July 30, 1981 September 3, 1981 _> tt — ' &/ t /-v-Bon n Chi (Signature ) P. Watson * ' Chief, Engineering and Manufacturing Branch (Title)\ * m»v /

**FAA FOUM 81 10-2 (10-68)**

## Every issue (1)

- September 3, 1981: Issued, Current. [certificate](https://openairdocs.org/files/sha256/c4/31/c431a19b127b4bbfe3461e804778b8f1104a073792223d6c933588264d9454f4)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.