# STC SA09011AC-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 55/55X Two Axis automatic flight guidance system, Model ST-592
- Applied: June 19, 1995
- Status date: January 3, 2002
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A3](https://openairdocs.org/tcds/2A3)
- Certificate PDF: https://openairdocs.org/files/sha256/2c/43/2c43bbaecb446cc8aa4504c2dd0165b57c208ee5e9b4ed6bab7d6ab1e2b114a8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/57BE5FF237A196F085256CC1007F399F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09011AC-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: SA09011AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 I art 3 of the Civil dir Regulutions.

Original Product Typo Certificate Number: 2A3 Make: Mooney Model: M20C, M20D, and M20E Description of Type Design Change:

Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-592, according to Bulletin No. 692, Revision 4, dated 1-03-02 and Master Drawing List No. 92792, Revision D, dated 1-03-02 or later FAA Approved revisions of the above data (14 Volt System).

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

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of Application: 6-19-95 Date Reissued:

Date of Issuance: 6-26-95 Date Amended: 1-03-02 By divection of the 1 ministrator FEDERAL AVIATION (Signature) TOMINISTRATOR Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) any alceracron of this cer able by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or boch.

FAA Porm 8110-2 (10-68) Page 1 of 2

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09011AC-D Limitations and Conditions: (con't.)

Model M20D eligibility limited to aircraft modified per Mooney Drawing No. 950082 (retractable gear conversion).

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891177, dated 6-26-95 is required for Mooney Models M20C; M20D When Modified Per Mooney Drawing No. 950082 (Retractable Gear Conversion) and M20E or later FAA Approved revisions of the above supplement.

3. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891177, Revision 1, dated 1-03-02 is required for Mooney models M20C; M20D when modified per Mooney Drawing No. 950082 (retractable gear conversion) and M20E for S-TEC System 55/55X or later FAA Approved revisions of the above supplement.

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

000, or imprisonment not exceeding 3 years, or both.

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

## Every issue (1)

- January 3, 2002: Amended, Current. [certificate](https://openairdocs.org/files/sha256/2c/43/2c43bbaecb446cc8aa4504c2dd0165b57c208ee5e9b4ed6bab7d6ab1e2b114a8)

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