# STC SA2-740

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Modification of main landing gear shuttle valve (Adel # D-11163).
- Applied: February 24, 1959
- Status date: August 31, 2000
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS LTC AL-13](https://openairdocs.org/tcds/LTC%20AL-13), [TCDS A-723](https://openairdocs.org/tcds/A-723)
- Certificate PDF: https://openairdocs.org/files/sha256/1a/42/1a4243292c1210a15c984dc51413d2b78b423e84b627e94df13325f6b7573cf4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/276146411434794C85256CC10083D4D6.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2-740

## ADs that name it (0)

None.

## Approved models (3)

- Air Trading Corporation Navy PV-1 ([TCDS LTC AL-13](https://openairdocs.org/tcds/LTC%20AL-13))
- Air Trading Corporation Navy PV-2 ([TCDS LTC AL-13](https://openairdocs.org/tcds/LTC%20AL-13))
- 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 522-740 This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Part SRAOT of the CiV11 Aix Regulations.

Original Product Type Certificate Number : 723, LTC 13 Make: Lockheed Model: 18, PV-1, PV-2 Description of Type Design Change:

Modification of main landing gear shuttle valve (Adel No. D-11163) in accordance with Drawing HAPD 9101 Revision D dated 3/17/60, or later FAA approved revision.

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

11 By Direction of the Administrator ber S. Frances Cox (Signature) TOMINISTRATO Manager, Special Certification Office, Southwest Region (Title)

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

Signature of grantor (In ink);

c FAA AC 69-5536

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/1a/42/1a4243292c1210a15c984dc51413d2b78b423e84b627e94df13325f6b7573cf4)

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