STC SA2-521

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2-521 This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Part 4a of the Civil Air Poegulationin Original Product Type Certificato Number : 723 Make: Lockheed Model: 0 18 Description of Type Design Change:

Installation of Edison Continuous Fire Detection System in accordance with drawings called out on Dallas Aero Service Drawing List Titled "Edison Fire Detection System", Rev. 1 dated 5/26/59, or later FAA approved revision.

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

5 FEDERAL AVIATION By Direction of the Administrator fols. Frances Cox (Signature) TOMINISTRATO Manager, Special Certification Office, Southwest Region (Title)

FAA Form 8110-2 (10-68) Fage 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 cade) from (Name of grantor) (Print or type) - (Address of grantor) (Number and street;

(City, State, and 2IP cade) Extent of Authority (if licensing agreement): - Date of Transfer:

Signature of grantor (In ink):

c FAA AC 69-5536