# STC SA7795SW-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 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/c8/ff/c8ffba095b5fccca0c9fde01d4a47ad01405407bcc51e0d3ee933046d991ee08
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B132D0078F9730EC85256CC20056A49A.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7795SW-D

## ADs that name it (0)

None.

## Approved models (4)

- The Cessna Aircraft Company 172M ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172P ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172Q ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

## 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.

Bcpartmcnt of transportation—Jpctaal atriation administration Supplemental 'Cgpc Certificate i/uvmvev SA7795SW-D S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 3 y^ Civil Air 3A12 CESSNA 172M, 172N, 172P, AND 172Q 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).

1. Also eligible on Cessna Models 172M, 172N, and 172P When Modified By 180 H.P, Engine Conversion.

(See Continuation Sheet, Page 2, a part of this STC.)

SZc/m*nt ~,: 6-12-91 6-26-91 (Stfnalur,) Wi11iam J. Thomas DAS Staff Coordinator, DAS 5 SW

TAu terlifiealt may be ttantfrmd in accmdane* a/ilfi FAR 21.17.

Hratrd Statn of 3ntrin Bepartment of Transportation— Jfederal atJianon administration Supplemental t^pe Certificate(Continuation £heet) SA7795SW-D Limitations and Conditions (con't.)

2. FAA/DAS Approved Supplemental Flight Manual, P/N 89925, dated 6-26-91 is required for Cessna Models 172M; and 172N, S/N 17271034 & Below And These Models When Modified By 180 H.P. Engine Conversion and/or later FAA Approved revisions of the above supplement.

3. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 89926, dated 6-26-91 is required for Cessna Models 172N, S/N 17271035 & On;

172P and 172Q; and Models 172N, S/N 17271035 & On and 172P When Modified By 180 H.P. Engine Conversion and/or later FAA Approved revisions of the above supplement.

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

.•\n\ alteration of thii certificate is punishable by etfini of not exceeding Sl,000, or imprisonment not exceeding 3 years, or bath.

PAA FORM aiiu-2-i (io-«») TAw catifcati may bt Irons/and in accordant! with 1'Ml .'/.V" PAGE 2 OF 2 PAGES

to (Name of transferee) (Address of transferee) (Number and street) (City, Stair, and <7P cade) from (Name oj grantor) (Print or type) (Address of grantor) (.Witmhfr and street) ( C.ilr. Stair, and ZIP ndr I 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/c8/ff/c8ffba095b5fccca0c9fde01d4a47ad01405407bcc51e0d3ee933046d991ee08)

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