# STC SA09223AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-680-20/30.
- Applied: May 16, 1997
- Status date: May 20, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A3](https://openairdocs.org/tcds/2A3)
- Certificate PDF: https://openairdocs.org/files/sha256/43/9b/439ba12f49c45f6007f30adb95fcb0db8b9104cccef6024b8eafb48b7d7d49f1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B6FB82EDA311C87885256CC1007F3A27.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09223AC-D

## ADs that name it (0)

None.

## Approved models (1)

- 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.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09223 AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Certifies that the change in the type design for the following product with the limitations and conditions thorofor as specifed hereon meets the arvorthiness requiements of Part 3 of the Civil ter Regulations.

Original Product I ye Certificate Numbos: 2A3 Make: MOONEY Model: M20K Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Mode ST-680-20/30, according to Bulletin No. 780, dated 5-15-97 and Master Drawing List No. 92996, dated 5-15-97 or later FAA Approved revisions of the above data (14 Volt System).

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891388, dated 5-20-97 is required for Mooney Model M20K for S-TEC System 20 or later FAA Approved revisions of the above supplement.

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

Date of Application: 5-16-97 Date Reissued:

Date of Issuance: 5-20-97 Date Amended:

By Direction of the Administrator FEDERAL AVIATION Will Tomers (Signature) TOMINISTRATION William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number 5A09223 AC-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891389, dated 5-20-97 is required for Mooney Model M20K for S-TEC System 30 or later FAA Approved revisions of the above supplement.

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

PAA Form 8110-2-1 (10-69) Page 2 of 2

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 & street] (City, State, and ZIP codel Extent of Authority (if licensing agreement):

Signature of granto: (In ink):

## Every issue (1)

- May 20, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/43/9b/439ba12f49c45f6007f30adb95fcb0db8b9104cccef6024b8eafb48b7d7d49f1)

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