# STC SA09144AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 55 two axis automatic flight guidance system, Model ST-625
- Applied: March 12, 1996
- Status date: March 22, 1996
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-765](https://openairdocs.org/tcds/A-765)
- Certificate PDF: https://openairdocs.org/files/sha256/31/e6/31e6c798da4de97a9420f6dc0e75c306c9fdf04f8dfb99976cd337bef9873b7e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D2CBFC03BC22432285256CC1007F39E2.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09144AC-D

## ADs that name it (0)

None.

## Approved models (14)

- Beechcraft Corporation 3N ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation 3NM ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation 3TM ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation C-45G ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation C-45H ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation D18S ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation E18S ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation E18S-9700 ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation G18S ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation H18 ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation JRB-6 ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation TC-45G ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation TC-45H ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation TC-45J ([TCDS A-765](https://openairdocs.org/tcds/A-765))

## What the certificate says

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

*Enited States ef Sacrica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA091AAC-D This certificate issued to: S-TEC Corporation 946 Pegram Mineral Wells, TX 76067 Part 3 of the CiVil Air Regulations Original Product -Type Contificate Number: A -765 Make: Beech Model: 3N, 3NM, 3TM, JRB-6, D18S, E18S, E185-9700, Description of Type Design Change: G18S, H18, C-45G, TC-45G, C-45H, TC-45H, and TC-45J (SNB-5) Installation of S-TEC System 55 Two Axis Automatic Flight Guidance System, Model ST-625, with Optional Autotrim System according to Bulletin No. 725, dated 3-11-96 and Master Drawing List No. 92915, dated 3-11-96 with Optional Flight Director/ Steering Horizon or later FAA Approved revisions of the above data (28 Volt System).

1. Also eligible on the Above Models When Modified By Hamilton Gross Weight Increase.

2. Also eligible on Models D185, E185, E185-9/00, G18S, H18, C-45G, TC-45G, C-45H, TC-45H, and TC-45J (SNB-5) When Modified By Vclpar Tri-Gear Installation.

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

Thomas (Title)

FAA Fose 8110-2(10-68)

INSTRUCTIONS: The transfer endoraement below may be used to notify the appropriate FAA Regional Office of the transfer of the Supplemental Type Ceitificate.

The EAA will reissue the certificate in the name of the transferee and forward it to inm

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 code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09144AC-D Limitations and Conditions: (con't.)

3. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement for Beech Models 345 T-45 15, These Models as Volpar Tri-Gear Installation or later FAA Approved revisions of the above supplement.

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

Any alteration of this certificate is punishable by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or hith FAA FORM 8110-2-1 (10-69) This certificate may be transferred in accordance with FAR 21:47 PAGE 2 OF 2 PAGES

## Every issue (1)

- March 22, 1996: Issued, Current. [certificate](https://openairdocs.org/files/sha256/31/e6/31e6c798da4de97a9420f6dc0e75c306c9fdf04f8dfb99976cd337bef9873b7e)

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