# STC SA4-602

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Brittain Industries, Inc, United States
- Description: Installed Brittain-Clarkson Autopilot
- Applied: September 17, 1958
- Status date: November 19, 2013
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/e2/6e/e26ed7f9487bcca2a2b6a3164b24dd953c269edf1c31a5aba4c03010e146d37a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/45E784044AA51E9686257DCB005E6C4B.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4-602

## ADs that name it (0)

None.

## Approved models (18)

- Cessna Aircraft Company 172 ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172A ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172B ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172C ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172F (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172H (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172I ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172M ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172P ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172Q ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172R ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172S ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

## 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 SA4-602

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: 3A12

Make: Cessna Model: 172 Series (See Limitations)

Installed Brittain-Clarkson Autopilot in accordance with Brittain Industries, Inc. Installation Manual 11902 or Brittain Industries Inc.

Installation Manual 11902B.

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.

FAA Approved Brittain Airplane Flight Manual listed on sealed Master Drawing List #AP-7 or later FAA approved revision required with this installation.

Applicable eligible aircraft models and FAA Approved Airplane Flight Manual Supplements listed on sealed Master Drawing List #AP-7 or later FAA approved revision.

Date of application: September 17, 1958 Date reissued: November 19, 2013;

3/9/61; 7/31/61; 5/2/63; 5/12/64; 11/10/69; 11/2/72 Revision 6 Date of issuance: September 17, 1958 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/e2/6e/e26ed7f9487bcca2a2b6a3164b24dd953c269edf1c31a5aba4c03010e146d37a)

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