# STC SA5305SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC system 60 two axis automatic flight guidance system, model ST-030 with optional automatic electic trim.
- Applied: January 20, 1984
- Status date: August 4, 1989
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A3](https://openairdocs.org/tcds/2A3)
- Certificate PDF: https://openairdocs.org/files/sha256/13/1f/131f343d351cd9818b427967e72f1b0ba0d010ed3bedd293846027777369982a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4492F71E56C4BCA585256CC200122836.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5305SW-D

## ADs that name it (0)

None.

## Approved models (3)

- Mooney International Corporation M20C ([TCDS 2A3](https://openairdocs.org/tcds/2A3))
- Mooney International Corporation M20D ([TCDS 2A3](https://openairdocs.org/tcds/2A3))
- Mooney International Corporation M20E ([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.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA53055W-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 -TypeCertificate Number: 2A3 Make: Mooney Model: M2OC, M2OD and M2OE Description of Type Design Change:

Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-030, with Optional Automatic Electric Trim according to Bulletin No. 133, Revision 6, dated 6-21-89 and Master Drawing List No. 9222, Revision F, dated 6-21-89 with Optional Flight Director/Steering Horizon and/or later FAA Approved revisions of the above data (14 Volt System).

1. Only eligible on Model M20D When Modified Per Mooney Drawing No. 950082 (Retractable Gear Conversion).

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

Date of Application: 1-20-84 Date Reissued: 8-04-89, Revision 1 Date of Issuance: 4-17-84 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Zasold H. Allen (Signature ) N Harold W. Holdeman CHINI STRATO DAS Staff Coordinator, DAS 5 SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA53055W-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 8919-1, dated 4-1/-84 is required for Mooney Models M20C and M20E and/or later FAA Approved revisions of the above supplement.

3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 8919-2, dated 8-04-89 is required for Mooney Models M20C; M20D When Modified Per Mooney Drawing No. 950082 (Retractable Gear Conversion) and M20E and/or later FAA Approved revisions of the above supplement.

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

**17 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 ZIP code) trom (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):

## Every issue (1)

- August 4, 1989: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/13/1f/131f343d351cd9818b427967e72f1b0ba0d010ed3bedd293846027777369982a)

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