# STC SA09241AC-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-702-20/30.
- Status date: May 18, 1999
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A8SW](https://openairdocs.org/tcds/A8SW)
- Certificate PDF: https://openairdocs.org/files/sha256/a1/f8/a1f8fa7ceed8bf334e40a0a54ed57d9d6bd0077ddc843fe77431040a969b2436
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4F0A9AE5D52551A585256CC1007F3A3A.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09241AC-D

## ADs that name it (0)

None.

## Approved models (1)

- Fairchild Aircraft Corporation SA227-AC (C-26A) ([TCDS A8SW](https://openairdocs.org/tcds/A8SW))

## 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: SA09241AC-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 horeon meets the airothiness requioments of Part 23 of the Federal A viation Regulations.

Original Product I ype Certifcate Number: A8SW Make: Fairchild Aircraft Model: SA227-AC (C-26A) Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-702-20/30, according to Bulletin No. 802, Revision I, dated 8-26-97 and Master Drawing List No.

921008, Revision A, dated 8-26-97 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 891436, dated 6-25-97 is required for Fairchild Aircraft Model SA227-AC (C-26A) 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: 6-23-97 Date Reissued:

Dato of oscanco: 6-25-97 Date Amended: 8-29-97, Revision 1 By Direction of the Administrator FEDERAL AVIATION Win Home TOMINISTRATIO 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 5A09241 AC-D, Revision 1 Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891437, dated 6-25-97 is required for Fairchild Aircraft Model SA227-AC (C-26A) for S-TEC System 30 or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891436, Revision 1, dated 8-29-97 is required for Fairchild Aircraft Model SA227-AC (C-26A) for S-TEC System 20 or later FAA Approved revisions of the above supplement.

4. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891437, Revision 1, dated 8-29-97 is required for Fairchild Aircraft Model SA227-AC (C-26A) for S-TEC System 30 or later FAA Approved revisions of the above supplement.

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

FAA Form 8110-2-1(10-59) 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 2TP 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)

- August 29, 1997: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/a1/f8/a1f8fa7ceed8bf334e40a0a54ed57d9d6bd0077ddc843fe77431040a969b2436)

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