# STC SA7797SW-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, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A4EU](https://openairdocs.org/tcds/A4EU)
- Certificate PDF: https://openairdocs.org/files/sha256/d4/0b/d40b43a4237a98b8623700394d8116ef1d5434ba1cc041c92f858ef72c6f46d3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/82540F3702BDD71D85256CC20056A49C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7797SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company F172M ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))
- Cessna Aircraft Company F172N ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))

## 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.

n Bcpartment of Transportation—federal atriarion administration Supplemental 'Cgpc Certificate SA7797SW-D S-TEC Corporation Rt. 4, Bldg. 946 Welters Industrial Complex Mineral Wells, TX 76067 Civil Air : A4EU REIMS AVIATION S.A. CESSNA . F172M AND F172N 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 the above Models When Modified By 180 H.P. Engine Conversion, (See Continuation Sheet, Page 2, a part of this STC.)

~: 6-12-91 6-26-91 ^^e**ru^ S&/min William 3\ Thomas DAS Staff Coordinator, DAS 5 SW (Title) ___

T/iu ctrtifieatt may be tranifrrrtd in atarJana with FAR 21.17.

fAA POM I11O.I (IO-««)

ttractd Scam of anmra Btpartmcnt of Transportation— .federal Station Administration Supplemental ICgpe Certificate(Continnation 3tiett) SA7797SU-D Limitations and Conditions (con't.)

2. FAA/DAS Approved Supplemental Flight Manual, P/N 89928, dated 6-26-91 is required for Reims Aviation S.A. Models Cessna F172M and F172N And These Models When Modified By 180 H.P. Engine Conversion and/or later FAA Approved revisions of the above supplement.

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

. Im altfriitiun of this certificate is punishable by a Jim of not exceeding 11,000, or imprisonment not exceeding 3 years, or hmh.

PAA FOBM atiu-2-i (io-8») This catifcati may bi uansftrrtd in accordant! with 1'AR .'/.V'" PAGE 2 OF 2 PAGES

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and <V/> code) from (Name of grantor) (Print or type) (Address of grantor) (Nuruher and street) ( C.tlv. Stale, and ^IT code 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/d4/0b/d40b43a4237a98b8623700394d8116ef1d5434ba1cc041c92f858ef72c6f46d3)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.