# STC SA4-522

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Brittain Industries, Inc, United States
- Description: Installed B2D Flight Control System
- Applied: March 26, 1958
- Status date: October 21, 2016
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/12/ad/12ad934c6759f07fd954b5471d4ebb4cbbc81a952ae4152a5c7bcbd0b0f8f353
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3889A0C2AC77EB1C862580B5006D8471.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-522

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-23 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Piper Aircraft Inc. PA-23-160 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

## 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.

FAA Form 8110-2 (5/14) Page 1 of 2

Number: SA4-522

Part 3 of the Civil Air Regulations.

Original Product – Type Certificate Number: 1A10 Make: Piper Model: PA-23, PA-23-160

Installed B2D Flight Control System in accordance with Brittain Industries, Inc. Drawing No. 11008-3, Sheets 1 and 2.

FAA Approved Brittain Aircraft Flight Manual Supplement dated July 31, 1961, or later FAA approved revision required.

The installer must determine whether this design change is compatible with previously approved modifications. 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: March 26, 1958 Date Reissued: November 19, 2013; October 21, 2016;

7/31/61; 11/10/69; 11/2/72 Revision 3 Date of Issuance: June 6, 1958 Date Amended:

Signature

Title James A. Grigg Acting Manager, Fort Worth Aircraft Certification Office, Southwest Region Brittain Industries, Inc.

3266 N. Sheridan Road Tulsa, OK 74115

FAA Form 8110-2 (5/14) Page 2 of 2

Transfer the ownership of Supplemental Type Certificate Number: SA4-522

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST10962SC

FAA Form 8110-2 (5/14) Page 3 of 3

## Every issue (2)

- October 21, 2016: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/12/ad/12ad934c6759f07fd954b5471d4ebb4cbbc81a952ae4152a5c7bcbd0b0f8f353)
- November 19, 2013: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/68/d7/68d778154827303f0f0adfbd539574a8223b29067430c08e407b28cce246de59)

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