# STC SA5228SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC yaw damper system, Model ST-112.
- Applied: July 25, 1983
- Status date: October 23, 1986
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A3](https://openairdocs.org/tcds/2A3)
- Certificate PDF: https://openairdocs.org/files/sha256/5c/5a/5c5abc6c95f007ca34f594154a0aed9c1eb5e7434d74e74a9a51b4b17aabc19f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3A99874AA3C202C385256CC2001227AC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5228SW-D

## ADs that name it (0)

None.

## Approved models (4)

- Mooney International Corporation M20F ([TCDS 2A3](https://openairdocs.org/tcds/2A3))
- Mooney International Corporation M20G ([TCDS 2A3](https://openairdocs.org/tcds/2A3))
- Mooney International Corporation M20J ([TCDS 2A3](https://openairdocs.org/tcds/2A3))
- Mooney International Corporation M20K ([TCDS 2A3](https://openairdocs.org/tcds/2A3))

## What the certificate says

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

Hniced Staces of Sumence Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number • SA5228SW-D This certificate issued to: 1e S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 Part 3 of the Civil Air Hegulations Original Product - Type tiertificate Number: 2A3 Make: MOONEY Model: M2OF, M20G, M2OJ AND M20K Description of Type Design Change:

Installation of S-TEC Yaw Damper System, Model ST-112, according to Bulletin No.

215, Revision 5, dated 10-16-86 and Master Drawing List No. 92127, Revision E, dated 10-16-86 and/or later FAA Approved revisions of the above data (14 Volt System).

1. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89146-1, dated 10-20-83 is required and/or later FAA Approved revisions of the above supplement.

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

Date of Application: 7-25-83 Dala meissucd: 10-23-86, Revision 1 Date of Issuance: . 10-20-83 Date Amended:

FEDERAL AVIATIO Pay divedion of the Ildministrator Harold N. Ibelemo (Signalure ) TOMINISTRA ION DAS Staff Coordinator, DAS 5 SW Harold W. Holdeman (Tille)

47.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA52285W-D, Revision 1 Limitations and Conditions: (con't)

2. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89146-2, dated 10-23-86 is required and/or later FAA Approved revisions of the above supplement.

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

**17 PAGE2 OF 2PAGES**

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee).

(Address of transferee) (Number and street) (City, State, and ZIP code ) from (Name of grantor) (Print or type) .

(Address of grantor) (Number and street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Date of Transfer: _ Signature of grantor (In ink):

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

## Every issue (1)

- October 23, 1986: Amended, Current. [certificate](https://openairdocs.org/files/sha256/5c/5a/5c5abc6c95f007ca34f594154a0aed9c1eb5e7434d74e74a9a51b4b17aabc19f)

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