# STC SA7796SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 65 two axis automatic flight guidance system, model ST-470.
- Applied: June 12, 1991
- Status date: June 26, 1991
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A17](https://openairdocs.org/tcds/3A17)
- Certificate PDF: https://openairdocs.org/files/sha256/a2/4b/a24b33c423203799cf56392e2e46750dbc91cf67b9326af168d9e31710d89e14
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9D5B4636641360A585256CC20056A49B.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7796SW-D

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company R172K ([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.

tttd fata department of transportation -.federal Station administration >opplcmtntalCertificate isuvmvev SA7796SW-D S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 *5^/^ .^"~'-t* ——— r- C i V i 1 A 1 3A17 CESSNA R172K nVK nrr* Installation of S-TEC System 65 Two Axis Automatic Flight Guidance System, Model ST-470, according to Bulletin No. 570, dated 6-11-91 and Master Drawing List No. 92545, dated 6-11-91 with Optional Flight Director Steering Horizon and/or later FAA Approved revisions of the above data (28 Volt System).

FAA/DAS Approved Supplemental Flight Manual, P/N 89927, dated 6-26-91 is required for Cessna Model R172K and/or later FAA Approved revisions of the above supplement, Compatibility of this modification with other previously approved modifications must be determined by the installer.

- 6-12-91 6-26-91 ^^efmin*^^ ^-•f (Signattnt) William 3". Thomas DAS Staff Coordinator, DAS 5 SW (Ttlle) Any alteration of this ttrtificate is punishable by a fine of not exceeding SI ,000, or imprisonment not exceeding 3 years, or both.

This ttrtifeale may bt traiufemJ m accmJana unlH FAR 21.47.

»AA 11 10-1 (IO-M)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, Staff, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) {Number artd street) f C.tlY. Staff, and <~7/> fodt) Extent of Authority (if licensing agreement): _ Date of Transfer:.

Signature of grantor (In ink):

## Every issue (1)

- June 26, 1991: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a2/4b/a24b33c423203799cf56392e2e46750dbc91cf67b9326af168d9e31710d89e14)

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