# STC SA09365AC-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-818-20/30.
- Applied: May 20, 1998
- Status date: May 22, 1998
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A3](https://openairdocs.org/tcds/1A3)
- Certificate PDF: https://openairdocs.org/files/sha256/f2/a6/f2a6e6ddace9648464bc64f35d8ad61a21f2ecd87860f12c4a2a327a616a7531
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0D5D2ED18686E04285256CC1007F3ABA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09365AC-D

## ADs that name it (0)

None.

## Approved models (3)

- Alexandria Aircraft LLC 17-30 ([TCDS 1A3](https://openairdocs.org/tcds/1A3))
- Alexandria Aircraft LLC 17-31 ([TCDS 1A3](https://openairdocs.org/tcds/1A3))
- Alexandria Aircraft LLC 17-31TC ([TCDS 1A3](https://openairdocs.org/tcds/1A3))

## 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: SA09365 AC-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 specifed heron meets the aimorthiness requiements of Part 3 of the Cird & a Regulations.

Original Product Type Certifcate Numter: 1A3 Make: Bellanca Model: 17-30, 17-31, 17-31TC Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-818-20/30, according to Bulletin No. 918, dated 5-18-98 and Master Drawing List No. 921094, dated 5-18-98 or later FAA Approved revisions of the above data (14 Volt System).

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891730, dated 5-22-98 is required for Bellanca Models 17-30, 17-31 and 17-31TC for S-TEC System 20 or later FAA Approved revisions of the above supplement.

(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, revcked or a termination date is otherise established by the Administrator of the. I ederal st viation Aministration.

Date of Application: 5-20-98 Date Reissued:

Date of Issuance: 5-22-98 Date Amended:

By Direction of the Administrator FEDERAL AVIATION mill K (Signature) TOMINISTRATIO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) by a fine of not exce eeding $1,000, or Impr. ears, or both.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09365AC-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891732, dated 5-22-98 is required for Bellanca Models 17-30, 17-31 and 17-31TC for S-TEC System 30 or later FAA Approved revisions of the above supplement.

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

600, or imprisonment not exceeding I years, or bott.

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)

- May 22, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/f2/a6/f2a6e6ddace9648464bc64f35d8ad61a21f2ecd87860f12c4a2a327a616a7531)

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