# STC SA4087SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Brittain Industries, Inc, United States
- Description: Installation of Brittain BI-817 directional gyro coupler.
- Applied: November 10, 1978
- Status date: October 5, 2016
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS Miscellaneous](https://openairdocs.org/tcds/Miscellaneous)
- Certificate PDF: https://openairdocs.org/files/sha256/73/0e/730e164854d04dc46833279d48bbfd4073c072974a4a6789036efa7b87cbc7ba
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/732C7AE3FF9B6656862580B50061C0C9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4087SW

## ADs that name it (0)

None.

## Approved models (1)

- Miscellaneous Miscellaneous ([TCDS Miscellaneous](https://openairdocs.org/tcds/Miscellaneous))

## 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: SA4087SW

Part 3 of the Civil Air Regulations.

Original Product – Type Certificate Number: See Limitations and Conditions Make: See Limitations and Conditions Model: See Limitations and Conditions

Installation of Brittain Model BI-817 Directional Gyro Coupler in accordance with Master Drawing List 403-023-534 Revision C dated December 12, 1983, or later FAA approved revision.

FAA Approved Airplane Flight Manual/Supplement Manual No. 407-023-534 dated February 25, 1980, or later FAA approved revision, is required.

For applicable Type Certificate Number, Aircraft, and Model see Approved Model List 426-023-534 Revision C, or later FAA approved revision.

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: November 10, 1978 Date Reissued: April 3, 2013; October 5, 2016;

November 10, 1981; January 11, 1984 Revision 2 Date of Issuance: February 27, 1980 Date Amended:

Signature

Title Matt Crouch 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: SA4087SW

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 5, 2016: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/73/0e/730e164854d04dc46833279d48bbfd4073c072974a4a6789036efa7b87cbc7ba)
- January 11, 1984: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/d7/1d/d71dbe7c4ea1e99a2398d299094f19df850acf93e0c743d3b99db38cdb3d8103)

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