# STC SA3-443

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of curved glass, bird resistant windshield.
- Applied: July 1, 1958
- Status date: August 31, 2000
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-723](https://openairdocs.org/tcds/A-723)
- Certificate PDF: https://openairdocs.org/files/sha256/96/f6/96f62740ffe12eb50ea9d25bb8a405ac6c6cff1b045d29bb2db14eb0da72a830
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D5F6CAF8934D4B4386257DB600577448.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3-443

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Martin Aeronautics Company 18 ([TCDS A-723](https://openairdocs.org/tcds/A-723))

## 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: SA3-443 This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Certifies that the change in the type design for the following product with the limitutions and conditions therofor as specified hereon meets the aimeorthiness requirement's of Purt 42&4b of the CiVil Aix Foegulations.

Original Product Type Certificate Number: 723 Lockheed Model: 18 Description of Type Design Change:

Installation of curved glass, bird resistant windshield as per Minnesota Airmotive, Inc. Drawings D123, E232, E233, E234, and Report R107. Installation of heating and ventilating system consisting of Janitrol 200, 000 BTU/hr combustion heater and controls, cabin, cockpit and windshield air distribution system and cockpit and cabin cold air ventilating system as per Minnesota Airmotive, Inc. drawings on list dated August 26, 1959, and Report R162, or later FAA approved revision.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

July 01, 1958 Date Reissued: 9/4/92; 12/21/98; 8/31/00 Date of Issuance: October 30, 1959 Date Amended: May 20, 1982 Rev. 6 By Direction of the Administrator Zil Vickera for (Signature) S. Frances Cox TOMNISTRATIO Manager, Special Certification Office, Southwest Region (Title)

FAA Form 3110-2 (10-68) Page 1 of 2

The PAA will reissue the certificate in the name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number & street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink) :

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/96/f6/96f62740ffe12eb50ea9d25bb8a405ac6c6cff1b045d29bb2db14eb0da72a830)

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