# STC SA7191SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC Manuel Electric Trim System, Model ST-447.
- Applied: September 12, 1988
- Status date: September 21, 1988
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A18EU](https://openairdocs.org/tcds/A18EU)
- Certificate PDF: https://openairdocs.org/files/sha256/a1/08/a108e4134f5120417705c3bf3689194b4163a68af4e822d5d2cf1c5727637873
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/38670DB6D85DB7EC85256CC20056A1F0.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7191SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company FR172J ([TCDS A18EU](https://openairdocs.org/tcds/A18EU))
- Cessna Aircraft Company FR172K ([TCDS A18EU](https://openairdocs.org/tcds/A18EU))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA71915W-D This certificate issued to: S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 Part 3 of the CiVil Air Regulations.

Original Product - Type bertificate Number: A18EU Make: Reims-Cessna Model: FR172J and FR172K Description of Type Design Change:

Installation of S-TEC Manual Electric Trim System, Model ST-447, according to Bulletin No. 547, dated 9-05-88 and Master Drawing List No. 92484, dated 9-05-88 and/or later FAA Approved revisions to the above data (14 Volt System).

1. FAA Approved Supplemental Flight Manual, P/N 89807, dated 9-21-88 is required and/or later FAA Approved revisions of the above supplement.

2. Compatability of this modification with other previously approved modifications must be determined by the installer.

Date of Application: 9-12-88 Date Reissued:

Date of Issuance: 9-21-88 Date Amended:

FEDERAL AVTATION By Direction of the Administrator Harold I Wildeman (Signature) TOMINISTRATO DAS Staff Coordinator, DAS 5 SW Harold W. Holdeman (Title)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and Z1P code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and Z1P code) Exent of Authority (if licensing agreement) :

Signature of grantor (1n ink) :

## Every issue (1)

- September 21, 1988: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a1/08/a108e4134f5120417705c3bf3689194b4163a68af4e822d5d2cf1c5727637873)

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