# STC SA09259AC-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-714.
- Applied: July 22, 1997
- Status date: October 12, 1998
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A12SO](https://openairdocs.org/tcds/A12SO)
- Certificate PDF: https://openairdocs.org/files/sha256/a4/de/a4de94066c9b989f1794be09340c0de2eefc1c1f08f3803a7210e5df85fab0d3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4DD386378E68057585256CC1007F3A4A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09259AC-D

## ADs that name it (0)

None.

## Approved models (6)

- Commander Aircraft Corporation 112 ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 112B ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 112TC ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 112TCA ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 114 ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Corporation 114A ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))

## 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: SA09259 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 therefor as specifed hereon meets the aircorthiness tequiements of I art 23 of the I ederal St viation Kegulations.

Original Product I ype Certifcale A umber: A 12SO Make: Commander Aircraft Model: 112, 112B, 112TC, 112TCA, 114, and 114A Description of Type Design Change:

Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-714, according to Bulletin No 814, Revision 2, dated 10-07-98 and Master Drawing List No. 921014, Revision B, dated 10-07-98 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.

suspended, tevoked or a termination date is otherese established by the Administrator of the. I ederal A viation administration.

Date of Application: 7-22-97 Date Reissued:

Date of Issuance: 7-24-97 Date Amended: 10-12-98, Revision 1 By Direction of the Administrator FEDERAL AVIATION made 1- (Signature) TAMINSTRATO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) 000, or imprisonment not exceeding i yearse or both.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09259AC-D, Revision 1

1. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891460, dated 7-24-97 is required for Commander Aircraft Models 112, S/N 126 & Above;

112B, 112TC, 112TCA, 114, and 114A or later FAA Approved revisions of the above supplement.

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement P/N 891460, Revision 1, dated 10-12-98 is required for Commander Aircraft Models 112, 112B, 112TC, 112TCA, 114, and 114A or later FAA Approved revisions of the above supplement

3. 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 grantor (In ink):

## Every issue (1)

- October 12, 1998: Amended, Current. [certificate](https://openairdocs.org/files/sha256/a4/de/a4de94066c9b989f1794be09340c0de2eefc1c1f08f3803a7210e5df85fab0d3)

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