# STC SA09386AC-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-840-20/30.
- Applied: September 15, 1998
- Status date: September 17, 1998
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A16EA](https://openairdocs.org/tcds/A16EA)
- Certificate PDF: https://openairdocs.org/files/sha256/f1/1c/f11c180b90f18a23bf642258d27443a36ce04d6989a021264fe6e3520637c3dd
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/749D496B481FE8C385256CC1007F3AD2.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09386AC-D

## ADs that name it (0)

None.

## Approved models (3)

- True Flight Holdings LLC AA-5 ([TCDS A16EA](https://openairdocs.org/tcds/A16EA))
- True Flight Holdings LLC AA-5A ([TCDS A16EA](https://openairdocs.org/tcds/A16EA))
- True Flight Holdings LLC AA-5B ([TCDS A16EA](https://openairdocs.org/tcds/A16EA))

## 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: SA09386AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 93 of the Federal viation Regulations.

Original Product I ype Certifcate A umber: A 16EA Make: American General Model: AA-5, AA-SA, and AA-5B Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-840-20/30. according to Bulletin No. 940, dated 9-14-98 and Master Drawing List No. 921115. dated 9-14-98 or later FAA Approved revisions of the above data (14 Volt System).

American General Model AA-5 eligible only on System 20.

(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, revoked or a termination date is herase established by the St dministrator of the Federal s viation Administration.

Date of Application: 9-15-98 Date Reissued:

Date of Issuance: 9-17-98 Date Amended:

By Direction of the Administrator FEDERAL AVIATION (Signature) TOMINSTRATO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) 47

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09386AC-D Limitations and Conditions: (con't.)

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891786, dated 9-17-98 is required for American General Models AA-5, AA-5A, and AA-5B for S-TEC System 20 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 891787, dated 9-17-98 is required for American General Models AA-5A and AA-5B for S-TEC System 30 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.

FAA Form 8110-2-1(1C-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 code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink) :

## Every issue (1)

- September 17, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/f1/1c/f11c180b90f18a23bf642258d27443a36ce04d6989a021264fe6e3520637c3dd)

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