# STC SA09416AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 40X/50X single and two axis automatic flight guidance systems, Model ST-866-40X/50X.
- Applied: September 29, 1999
- Status date: October 1, 1999
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/ff/62/ff62ee9bed86e8c8df6313237007bf4f3b84e3db7a8f3139d9d478d5da5718a4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/19BD8D05CFEE0D1C85256CC1007F3AED.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09416AC-D

## ADs that name it (0)

None.

## Approved models (4)

- Beechcraft Corporation A36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation A36TC ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation B36TC ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation F33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## 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: SA09416ACD 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 Air Regulations.

Original Product Type Certificate A umber: ЗА15 Make: Beech Model: F33A, A36, A36TC, and B36TC Description of Type Design Change:

Installation of S-TEC System 40X/50X Single and Two Axis Automatic Flight Guidance Systems, Model ST-866-40X/50X, according to Bulletin No. 966, dated 9-28-99 and Master Drawing List No. 921162, dated 9-28-99 or later FAA Approved revisions of the above data (28 Volt System).

(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: 9-29-99 Date Reissued:

Date of Issuance: 10-01-99 Date Amended:

By Direction of the Administrator FEDERAL AVIATION sadde Kani (Signature) TOMINSTRATOR Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) le by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or both.

This certificate may be transferred in accordance with FAR 21.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09416AC-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891868, dated 10-01-99 is required for Beech models F33A; A36, S/N E-2110 and below (except S/N E-1946 and S/N E-2104); and A36TC for S-TEC System 40X or later FAA Approved revisions of the above supplement.

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891869, dated 10-01-99 is required for Beech model A36, S/N E-1946 and S/N E-2104 and S/N E-2111 and up for S-TEC System 40X or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891870, dated 10-01-99 is required for Beech model B36TC, S/N EA-242, S/N EA-273 through S/N EA-388 (except S/N EA-320) for S-TEC System 40X or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891871, dated 10-01-99 is required for Beech model B36TC, S/N EA-320 and S/N EA-389 and up for S-TEC System 40X or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891872, dated 10-01-99 is required for Beech models F33A; A36, S/N E-2110 and below (except S/N E-1946 and S/N E-2104); and A36TC for S-TEC System 50X or later FAA Approved revisions of the above supplement

6. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891873, dated 10-01-99 is required for Beech model A36, S/N E-1946 and S/N E-2104 and S/N E-2111 and up for S-TEC System 50X or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891874, dated 10-01-99 is required for Beech model B36TC, S/N EA-242, S/N EA-273 through S/N EA-388 (except S/N EA-320) for S-TEC System 50X or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891875, dated 10-01-99 is required for Beech model B36TC, S/N EA-320 and S/N EA-389 and up for S-TEC System 50X or later FAA Approved revisions of the above supplement.

9. 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)

- October 1, 1999: Issued, Current. [certificate](https://openairdocs.org/files/sha256/ff/62/ff62ee9bed86e8c8df6313237007bf4f3b84e3db7a8f3139d9d478d5da5718a4)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.