# STC SA2-446

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of windshield and propeller anti-ice system.
- Applied: February 25, 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/d4/96/d4962e8ccb52c249f5f0a617fdbe3bc028619b97b6bfc07d8e6cef4a41b6c23b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4536187C47461E1F85256CC10083D48B.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-446

## 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

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.

;Hnite& flairs dSi .

Peparimmi of ^ransporlation - Jffe&eral Qlertiftcate SA2-446 Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 723 Lockheed 18 Civil Air Installation of windshield and propeller anti-ice system in accordance with data listed on DAS Drawing List titled "Alcohol Tank Installation - Windshield and Propeller De-icer - L-18" Revision 4, dated 9/10/62, or later FAA approved revision.

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

&. Ifdrfetvetltt -- February 25, 1958 March 07, 1958 . 6/15/92 ; 12/21/98; 8/31/00 . June 2, 1982 Rev. 7 (Signature) Frances Cox Manager, Special Certification Office, Southwest Region

(Title) '.Iteration of this ctrttflc*tf Is pun by a fin* of not excwdlig $1.000, or Inprijomwnt not exceeding J yejrad of Pag* 1 ^f 2

INSTRUCTIONS The ir.msfcr endorsement below may be used !o notify the appropriate FAA Regional Office of [he transfer of" this Supplemental Type CJemJirale.

The FAA will reissue- [hr i.rruhi:ate in the iMrm- of [he transferee and forward il to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Namt of transferee) (Address nf transferee) { Number anil s (City, Stale, and ZIP todt) from (Name of grantor) (Print or type) (Address of grantor) (J/umbti and st'ttt J (City, Slate, and £1? tide I Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

C FAA AC 6i)-SS3B

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d4/96/d4962e8ccb52c249f5f0a617fdbe3bc028619b97b6bfc07d8e6cef4a41b6c23b)

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