# STC SA5285SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 40/50 single and two axis automatic flight guidance systems ST-184-40/50.
- Applied: March 10, 1984
- Status date: February 28, 1996
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A4EU](https://openairdocs.org/tcds/A4EU)
- Certificate PDF: https://openairdocs.org/files/sha256/b2/49/b2497caa223798b1ea6566696fdfb74e36b8c988a0bd110d448e592f3a88a323
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0CBDFC2649138B7385256CC200122810.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA5285SW-D

## ADs that name it (0)

None.

## Approved models (3)

- Cessna Aircraft Company F172M ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))
- Cessna Aircraft Company F172N ([TCDS A4EU](https://openairdocs.org/tcds/A4EU))
- Cessna Aircraft Company F172P ([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.

Vast gtoaa tf Bmaa Bqjartracnt of Transportation —federal 3tnarion administration Supplemental 'Cgpc Certificate SA5285SW-D S-TEC Corporation 946 Pegram Mineral Wells, TX 76067

••y*"yf-i//rrrrn mi-rifl tff mirtirrjtftnrti n -g 1 1 ir«p i tin it i/^Ji i* 3 ^tfi«- ClVll Air : A4EU : Reims Aviation S.A. Cessna

- F172M, F172N, and F172P Installation of S-TEC System 40/50 Single and Two Axis Automatic Flight Guidance Systems, Model ST-184-40/50, according to Bulletin No. 284, Revision 4, dated 2-21-96 and Master Drawing List 92212, Revision D, dated 2-21-96 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.

2. FAA Approved Supplemental Flight Manual, P/N 89419, dated 3-13-84 is required for Reims-Cessna Models F172M and F172N for S-TEC System 40 or later FAA Approved revisions of the above supplement.

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

.4^ -&^4ei>+n^^ S/XammtA i~&~*: 3-10-84 3-13-84 3L^..m.~J«S: 9-04-86, 2-28-96, Revision 2 William^JT Thomas DAS Staff Coordinator, DAS 5 SW (TMt)

Tkit artifittte mey be traiuftmj m tcnrdtna teitk FAR 21.17.

finiad Stairs of 2nrnn Bcpartmtnt of Transportation—Jfcdcral Station administration Supplemental lEgpe Certificate(Continuation gtett) tSVM/WlveV SA5285SW-D, Revision 2 Limitations and Conditions (con't.)

3. FAA Approved Supplemental Flight Manual, P/N 89422, dated 3-13-84 is required for Reims-Cessna Models F172M and F172N for S-TEC System 50 or later FAA Approved revisions of the above supplement.

4. FAA Approved Supplemental Flight Manual, P/N 89419-1, dated 9-04-86 is required for Reims-Cessna Models F172M and F172N and Reims-Cessna Models F172M and F172N When Modified By 180 H.P. Engine Conversion for S-TEC System 40 or later FAA Approved revisions of the above supplement.

5. FAA Approved Supplemental Flight Manual, P/N 89422-1, dated 9-04-86 is required for Reims-Cessna Models F172M and F172N and Reims-Cessna Models F172M and F172N When Modified By 180 H.P. Engine Conversion for S-TEC System 50 or later FAA Approved revisions of the above supplement.

6. FAA/DAS Approved Supplemental Flight Manual, P/N 89419-2, dated 2-28-96 is required for Reims Aviation S.A. Models Cessna F172M, F172N, and F172P And These Models When Modified By 180 H.P. Engine Conversion for S-TEC System 40 or later FAA Approved revisions of the above supplement.

7. FAA/DAS Approved Supplemental Flight Manual, P/N 89422-2, dated 2-28-96 is required for Reims Aviation S.A. Models Cessna F172M, F172N, and F172P And These Models When Modified By 180 H.P. Engine Conversion for S-TEC System 50 or later FAA Approved revisions of the above supplement.

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

.I'll alteration af this certificate is punishable by a fine of not exceeding SI,OOP, or imprisonment not exceeding 3 years, or hnih FAA FORM iiiu.2-1 (to-M) Thit certijvatt may hi uansjirrid in aetorJanet with /•".•!/< .'/.•/" 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, Slate, and ^IP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and %IP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

U.S. GOVERNMENT PRINTING OFFICE : 1966 OF —205-579

## Every issue (1)

- February 28, 1996: Amended, Current. [certificate](https://openairdocs.org/files/sha256/b2/49/b2497caa223798b1ea6566696fdfb74e36b8c988a0bd110d448e592f3a88a323)

---
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.