# STC SA09339AC-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-768-20/30.
- Applied: February 4, 1998
- Status date: February 6, 1998
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 5A3](https://openairdocs.org/tcds/5A3)
- Certificate PDF: https://openairdocs.org/files/sha256/fe/b4/feb427c93a0e963a3d8253b24dcdd42db74d2ea1660a3521ca1103a9dad9d97b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FB1CFA362AD5EC7B85256CC1007F3A9C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09339AC-D

## ADs that name it (0)

None.

## Approved models (2)

- Beechcraft Corporation A45 (Military T-34A; B-45) ([TCDS 5A3](https://openairdocs.org/tcds/5A3))
- Beechcraft Corporation D45 (Military T-34B) ([TCDS 5A3](https://openairdocs.org/tcds/5A3))

## 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: SA09339AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 3 of the Civil stir Regulations.

Original Product . I ype Certifcate Number: БАЗ Al ate : Beech Model: A45 (T-34A, B-45) and D45 (T-34B) Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-768-20/30, according to Bulletin No. 868, dated 2-03-98 and Master Drawing List No. 921071, dated 2-03-98 or later FAA Approved revisions of the above data (28 Volt System).

L Also eligible on The Above Models When Modified by STC SA1450SW or STC SA1864SW (Installation of 285 H.P. Engine).

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

Date of Application: 2-04-98 Date Reissued:

Date of Issuance: 2-06-98 Date Amended:

By Direction of the Administrator ÇEDERAL AVIATION Wistia Shamas Signatur 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: SA09339AC-D Limitations and Conditions: (con't.)

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891663, dated 2-06-98 is required for Beech Models A45 (T-34A, B-45) and D45 (T-34B) And The Above Models When Modified by STC SA1450SW or STC SA1864SW (Installation of 285 H.P.

Engine) for S-TEC System 20 or later FAA Approved revisions of the above supplement FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891664, dated 2-06-98 is required for Beech Models A45 (T-34A, B-45) and D45 (T-34B) And The Above Models When Modified by STC SA1450SW or STC SA1864SW (Installation of 285 H.P.

Engine) 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(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 code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink)

## Every issue (1)

- February 6, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/fe/b4/feb427c93a0e963a3d8253b24dcdd42db74d2ea1660a3521ca1103a9dad9d97b)

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