# STC SA09275AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 65 Two Axis Automatic Flight Guidance System, Model ST-665.
- Applied: August 13, 1997
- Status date: September 10, 1997
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS LTC-11](https://openairdocs.org/tcds/LTC-11)
- Certificate PDF: https://openairdocs.org/files/sha256/0d/8a/0d8a5235d27f21bb68b396775641ff1a1facc9da27498087374affc09249f5dc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0A799FBD670B843685256CC1007F3A5B.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09275AC-D

## ADs that name it (0)

None.

## Approved models (2)

- Cal Pacific Airmotive Inc. Army P-51D ([TCDS LTC-11](https://openairdocs.org/tcds/LTC-11))
- Cal Pacific Airmotive Inc. Army P-51K ([TCDS LTC-11](https://openairdocs.org/tcds/LTC-11))

## 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: SA09275 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 aivoorthiness soguisements of Part 23 of the I ederal I viation Regulations.

Original Product I ype Certificate Number: L-11-3 Make: North American Model: P-51D (F-51D) and P-51K (F-51K) Description of Type Design Change:

Installation of S-TEC System 65 Two Axis Automatic Flight Guidance System, Model ST-665, according to Bulletin No. 765, dated 8-12-97 and Master Drawing List No. 921018, dated 8-12-97 with Optional Flight Director/Steering Horizon or later FAA Approved revisions of the above data (28 Volt System).

1. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891534S, dated 9-10-97 is required for North American Models P-51D (F-6-D) (F-51D) and P-51K (F-51K) or later FAA Approved revisions of the above supplement.

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

Date of Application: 8-13-97 Date Reissued:

Date of Issuance: 9-10-97 Date Amended:

By Direction of the Administrator FEDERAL AVIATION > Thomas TOMINSTRATO 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: SA09275 AC-D Limitations and Conditions: (con't.)

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

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

The FAR will reissue the certificate in the name of the transferme and forward it to him.

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):

## Every issue (1)

- September 10, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/0d/8a/0d8a5235d27f21bb68b396775641ff1a1facc9da27498087374affc09249f5dc)

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