# STC SA09502AC-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Ins(;illation oT S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, System40/50 Single and Two Axis Automat it Flight Guidance Systems, and System 30 ALT Altitude Hold System, Model ST-881,
- Applied: July 24, 2000
- Status date: September 19, 2000
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A22NM](https://openairdocs.org/tcds/A22NM)
- Certificate PDF: https://openairdocs.org/files/sha256/2c/0d/2c0dd9c827eba408a5f52814b759e02c24a3108fa005f664e8e5e49165f5537c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5CA2F2EB868E53CD85256CC1007F3B26.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09502AC-D

## ADs that name it (0)

None.

## Approved models (3)

- Aviat Aircraft Inc A-1 ([TCDS A22NM](https://openairdocs.org/tcds/A22NM))
- Aviat Aircraft Inc A-1A ([TCDS A22NM](https://openairdocs.org/tcds/A22NM))
- Aviat Aircraft Inc A-1B ([TCDS A22NM](https://openairdocs.org/tcds/A22NM))

## 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: SA09502AC-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 fellowing product with the limitations and conditions therefor as specified heren meets the arrothiness requiements of Part 23 of the Federal of viation Regulations.

Original Product Type Certifiate A umber: A22NM Make: Aviat Aircraft, Inc.

Model: A-1, A-IA, and A-IB Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, System 40/50 Single and Two Axis Automatic Flight Guidance Systems, and System 30 ALT Altitude Hold System, Model ST-881, according to Bulletin No. 981, Revision 1, dated 9-14-00 and Master Drawing List No. 921193, Revision A, dated 9-14-00 or later FAA Approved revisions of the above data (14/28 Volt Systems).

(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.

Date of Application: 7-24-00 Date Reissued:

Date of Issuance: . 8-03-00 Date Amended: 9-19-00 By drection of the A dwinstates FEDERAL AVIATION тілк (Signature) TOMINISTRATIO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09502ACD Limitations and Conditions: (con't.)

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 892060S, dated 8-03-00 is required for Aviat Aircraft, Inc. models A-1, A-IA, and A-IB for System 20 or later FAA Approved revisions of the above supplement.

2. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 892061S, dated 8-03-00 is required for Aviat Aircraft, Inc. models A-l, A-IA, and A-IB for System 30 or later FAA Approved revisions of the above supplement.

3. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 892062S, dated 9-19-00 is required for Aviat Aircraft, Inc. models A-1, A-IA, and A-1B for System 40 or later FAA Approved revisions of the above supplement.

4. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 892063S, dated 9-19-00 is required for Aviat Aircraft, Inc. models A-1, A-IA, and A-IB for System 50 or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 892064, dated 9-19-00 is required for Aviat Aircraft, Inc. models A-1, A-LA, and A-IB for System 30 ALT or later FAA Approved revisions of the above supplement.

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

47.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and 21P code ) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and 2IP code) Extent of Authority (if licensing agreement): - Date of Transfer:

Signature of grantor (In ink):

## Every issue (1)

- September 19, 2000: Amended, Current. [certificate](https://openairdocs.org/files/sha256/2c/0d/2c0dd9c827eba408a5f52814b759e02c24a3108fa005f664e8e5e49165f5537c)

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