# STC SA4-571

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Vanaero Company, United States
- Description: Installation of Airborne Radar, RDR-1
- Applied: January 30, 1958
- Status date: August 6, 2007
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS TCS L-3](https://openairdocs.org/tcds/TCS%20L-3)
- Certificate PDF: https://openairdocs.org/files/sha256/fc/1f/fc1febb36a450e192eb0290b3bcf73018cfd8f75e67bb6132ce4853f5cb41081
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/74076C9BA0CDBBE986257356005CFF33.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-571

## ADs that name it (0)

None.

## Approved models (2)

- P. V. Shields A-26B (Army) ([TCDS TCS L-3](https://openairdocs.org/tcds/TCS%20L-3))
- P. V. Shields A-26C (Army) ([TCDS TCS L-3](https://openairdocs.org/tcds/TCS%20L-3))

## 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 reissued to replace certificate reported lost.

This Certificate issued to MIKE KEITHLEY MAILING ADDRESS c/o MGK AERO INC. P. O. BOX 221957 d/b/a VANAERO COMPANY NEWHALL, CA 91322-1957 25620 RYE CANYON ROAD BLDG. A VALENCIA, CALIFORNIA 91355 Part 9 of the Civil Air Regulations.

Douglas

A-26 Description of Type Design Change : Installation of Airborne Radar, RDR-1. In accordance with Aircraft Technical Service Drawing No. 269 and On Mark Engineering Com pany Drawing 1264-400 in aircraft incorporating nose installation per STC SA4-385.

Limitations and Conditions: This approval should not be extended to other specific aircraft of this m odel on which other previously approved m odifications ar e incorporated, unless it is determ ined that the interrelationship between this cha nge and any of those other previ ously approved m odifications will introduce no adverse effect upon the airworthiness of that aircraft. If the holder agrees to perm it another person to use this certificate to alter the product, th e holder shall give the other person written evidence of that permission.

Date of application : January 30, 1958

Date of issuance : August 15, 1958

Date reissued : May 1, 1970; August 6, 2007

( Signature) Manager, Technical & Administrative Support Staff Los Angeles Aircraft Certification Office ( Title)

## Every issue (1)

- August 6, 2007: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/fc/1f/fc1febb36a450e192eb0290b3bcf73018cfd8f75e67bb6132ce4853f5cb41081)

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