# STC SA4-1239

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Brittain Industries, Inc, United States
- Description: Installation of Brittain/Beechcraft Autopilot
- Applied: August 12, 1960
- Status date: November 19, 2013
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/7b/42/7b4291ce9d4254757e06b9a53ea471d814f01e3c7299546bd871d67ac076857e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7312F0253DF46A2386257DCB00681583.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-1239

## ADs that name it (0)

None.

## Approved models (5)

- Beechcraft Corporation 35-33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-A33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-B33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-C33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-C33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Number SA4-1239

This certificate issued to: Brittain Industries, Inc.

3266 N. Sheridan Road Tulsa, OK 74115

Part 3of the Civil Air Regulations.

Original Product – Type Certificate Number: 3A15

Make: Beech Model: 35-33 Series (See Limitations and Conditions)

Installation of Brittain/Beechcraft Autopilot in accordance with Brittain Industries, Inc. Installation Manual 11905-1 (Aileron Only), or Brittain/Beechcraft Autopilot in accordance with Brittain Industries, Inc. Installation Manual 11905-1 and 11905-2 (Aileron & Rudder), and optional Brittain Industries, Inc. Beechcraft Nav-Coupler “Add-on”, Model B1-300, B1-301 or B1-304 installed in accordance with Brittain Industries, Inc. Installation Manuals 11905-7, 7A or 11905-11, 11A.

Beech Aircraft Corporation FAA Approved Airplane Flight Manual Supplements listed on sealed Master Drawing List #AP-20 and APA-20 or later FAA approved revision required with this installation; also applicable eligible aircraft models are listed thereon.

If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Date of application: August 12, 1960 Date reissued: November 19, 2013;

7/31/61; 1/10/62; 9/10/62; 9/20/63; 12/10/64; 11/2/72 Revision 6 Date of issuance: August 12, 1960 Date amended:

Signature S. Frances Cox

Title Manager, Special Certification Office, Southwest Region

FAA Form 8110-2 (8/13) Page 1

**SUPPLEMENTAL TYPE CERTIFICATE, FAA FORM 8110-2 (CONTINUED)**

To (Name of transferee)

(Address of transferee)

(Number and street)

(City, State, and ZIP Code)

From (Name of grantor)

(Address of grantor)

(Number and street)

(City, State, and ZIP Code)

FAA Form 8110-2 (8/13) Page 2

## Every issue (1)

- November 19, 2013: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/7b/42/7b4291ce9d4254757e06b9a53ea471d814f01e3c7299546bd871d67ac076857e)

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