# STC SA3638SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Texas Aviation Services, United States
- Description: Installation of a single Sperry Primus 90 weather Radar.
- Applied: May 15, 1986
- Status date: March 11, 2010
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26)
- Certificate PDF: https://openairdocs.org/files/sha256/61/24/6124917361fb029b2c8c80ce06dfad5936020bdd874c7a9c75a44f7cf9cd7933
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/142A40B3598710CE86257C45005D2835.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3638SW

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 707-300 Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA363854 This certificate issued to: Texas Aviation Services 3901 Main St., Hanger 2 South Fort Worth, TX 76106-2752 Part Ab of the Civil Aix Requlations.

Original Product Type Certificate Number: 4A26 Make: The Boeing Company Model: 707-300 Description of Type Design Change:

Installation of a Single Sperry Primus 90 Weather Radar in accordance with Addison Avionics, Inc., Drawing List 860428-0001, Rev. A, dated 6/25/86 or later FAA approved revision.

Compatibility of this modification with previously installed equipment must be determined by installer. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of Application: May 15, 1986 Date Reissued: 6/7/88; 4/23/92; 4/30/03;

3/11/2010 Date of Issuance: July 25, 1986 Date Amended:

FEDERAL AVIATION By Direction of the Administrator ay A Sharon (Signature) TOMNISTRATIO S. Frances Cox, Manager Special Certification Office, Southwest Region (Title)

## Every issue (1)

- March 11, 2010: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/61/24/6124917361fb029b2c8c80ce06dfad5936020bdd874c7a9c75a44f7cf9cd7933)

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