# STC SA09288AC-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-726-20/30.
- Applied: October 9, 1997
- Status date: October 13, 1997
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A24CE](https://openairdocs.org/tcds/A24CE)
- Certificate PDF: https://openairdocs.org/files/sha256/6e/10/6e10c0e54e7da399ccb12dba717ac2709a2656e0eb7526e775f4f3873e5628ec
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/888D9DE5EED7007985256CC1007F3A6A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09288AC-D

## ADs that name it (0)

None.

## Approved models (2)

- Beechcraft Corporation 1900 ([TCDS A24CE](https://openairdocs.org/tcds/A24CE))
- Beechcraft Corporation 1900C (C-12J) ([TCDS A24CE](https://openairdocs.org/tcds/A24CE))

## 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: SA09288AC-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 speciped hereen meets the aimorthiness requiements of Part 23 of the Federal A viation Regulations.

Original Product I ype Cerlifcate A umber: A24CE Make: Beech Model: 1900 and 1900C (C-12J) Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-726-20/30, according to Bulletin No. 826, dated 10-08-97 and Master Drawing List No. 921032, dated 10-08-97 or later FAA Approved revisions of the above data (28 Volt System).

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891547, dated 10-13-97 is required for Beech Models 1900 and 1900C (C-12J) for S-TEC System 20 or later FAA Approved revisions of the above supplement.

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

Date of Application: 10-09-97 Date Reissued:

Date of Issuance: 10-13-97 Date Amended:

By Direction of the Administrator FEDERAL AVIATION → June TOMNISTRATO William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title)

47.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09288 AC-D Limitations and Conditions: (con't.)

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891548, dated 10-13-97 is required for Beech Models 1900 and 1900C (C-12J) for S-TEC System 30 or later FAA Approved revisions of the above supplement.

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 2IP 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)

- October 13, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/6e/10/6e10c0e54e7da399ccb12dba717ac2709a2656e0eb7526e775f4f3873e5628ec)

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