# STC SA2-946

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of main landing gear doors.
- Applied: October 6, 1960
- 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/ad/44/ad440680123ad4e8133df6098719a4d7ed6e6db3ee49d6fabd35d34110e95062
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ABAB13CB2F1607E085256CC10083D505.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-946

## 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 5A2-946 This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Part SRA07 of the Civi1 Aix Regulations.

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

Installation of main landing gear doors in accordance with Swearingen Company Drawing List No. 1401-DL Change C dated 5/31/62, or later FAA approved revision.

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

Date of Application: October 06, 1960 Date Reissued: 7/10/92; 12/21/98; 8/31/00 Date of Issuance: July 07, 1961 Date Amended: May 26, 1982 Rev. 9 FEDERAL AVIATION cotion of the odinistrator (Signature) Frances Cox TOMINSTRATO Manager, Special Certification Office, Southwest Region (Title)

FAA Form B110-2(10-68) Page 1 of 2

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 and street) (City, State, and ZIP code) Extent of Authority (if licensing agreement): - Date of Transfer:

Signature of grantor (In ink):

**FAA AC 69-5536**

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ad/44/ad440680123ad4e8133df6098719a4d7ed6e6db3ee49d6fabd35d34110e95062)

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