# STC SA477WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Brittain Industries, Inc, United States
- Description: Installation of Brittain/Beechcraft Model B-4 Flight Control System
- Applied: September 24, 1963
- Status date: October 28, 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/b7/d8/b7d8c0d1c3beeb0ea4dd69291fe6855e7891a136c8a8304f68b863b1a970d7fe
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A36EB0D8EB99C62686257DCC005061DC.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA477WE

## ADs that name it (0)

None.

## Approved models (15)

- 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))
- Beechcraft Corporation H35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation J35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation K35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation M35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation N35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation P35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation S35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35B ([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 SA477WE

This certificate issued to: Brittain Industries, Inc.

3266 N. Sheridan Road Tulsa, OK 74115

Part 3 of the Civil Air Regulations.

Original Product – Type Certificate Number: 3A15

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

Installation of Brittain/Beechcraft Model B-4 Flight Control System including Basic Brittain/Beechcraft Autopilot, PC-1 Pitch Assist, AH-1 Altitude Hold, and NAV-1 Navigation Coupler in accordance with Brittain Industries, Inc. Installation Manual 11905-09, 9B. Beech Aircraft Corporation FAA Approved Airplane Flight Manual Supplement listed on Sealed Master Drawing List #C-31 required with this installation.

Applicable eligible aircraft models and FAA Approved Airplane Flight Manual Supplement listed on sealed Master Drawing List #C-31 or later FAA approved revision.

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: September 24, 1963 Date reissued: October 28, 2013 9/18/63; 1/8/64; 12/10/64; 11/10/69; 11/2/72 Revision 5 Date of issuance: July 11, 1963 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)

- October 28, 2013: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/b7/d8/b7d8c0d1c3beeb0ea4dd69291fe6855e7891a136c8a8304f68b863b1a970d7fe)

---
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.