# STC SA1289SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: AirCorps Aviation, United States
- Description: This approves the modification of the Bendix Brake Control Units to improve braking performance
- Applied: September 1, 1981
- Status date: May 26, 2015
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-743](https://openairdocs.org/tcds/A-743)
- Certificate PDF: https://openairdocs.org/files/sha256/c3/2b/c32bda0878628d063255bf64ffb5d2bcb2733b778ee0597fff8bfee19d453c7a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/851A0CC9403EE0D486257E9A006B586A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1289SO

## ADs that name it (0)

None.

## Approved models (1)

- Boeing Airplane Company Wichita Division 75 (Army PT-13) ([TCDS A-743](https://openairdocs.org/tcds/A-743))

## 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.

This certificate issued to

Part 4a of the Civil Air R egulations .

Original Product --Type Certificate N umber :

Description of Type Design Change: This approves the modification of the Bendix Brake Control Units to improve braking performance in accordance with GidAir, Inc. Modification Instructions, Section 1, dated September 1, 1981; Section 2, Alterna te Sealing Method dated November 16, 1982; Section 3, installation of Stainless Steel Liner, dated December 13, 1982; and GidAir, Inc. Original Master Drawing List, Original Revision, dated June 2, 1993, or later FAA approved revisions.

1) Compatibility of this design change with previously approved modifications must be determined by the installer.

2) 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.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the A dministrator of the F ederal A viation A dministration.

AirCorps Aviation 1259A Industrial Park Dr SE Bemidji, MN 56601

A-743 M ake : Boeing (Stearman) M odel : 75 Series Date of application : September 1, 1981

Date of issuance : November 5, 1981 Date reissued : November 16, 2005; October 4, 2006;

April 1, 2014; May 26, 2015

Date amended : March 7, 1983; July 1, 1993

B y direction of the A dministrator Original Signed By:

Karol Mordasiewicz

(Signature) Karol Mordasiewicz Manager, Airframe and Administrative Branch Chicago Aircraft Certification Office

(Title)

FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES

SA1289SO

## Every issue (3)

- May 26, 2015: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c3/2b/c32bda0878628d063255bf64ffb5d2bcb2733b778ee0597fff8bfee19d453c7a)
- April 1, 2014: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/5b/f4/5bf4ad3c2e43ce3f725ee40609506457028b9103e7accc2894269a51a32be6bf)
- November 16, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/98/4f/984ff8a80007a3aaee787a08aa8b3331bcbea4830f6d842089579ee919e4be5e)

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