STC SA2-1523

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2-1523 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 linitations and conditions therofor as specified hereon meet's the airwoorthiness requirement's of Part SR407 of the Civil Air Regulations Original Product Type Certificate Number: 723 Make: Lockheed Model: 18 Description of Type Design Change:

Propeller autofeathering system installation in accordance with Howard Aero, Inc. Drawing List SD603000-H dated 2/14/62, or later FAA approved revision.

This STC is part of the basic Howard 250 and H250 Tri-Gear configurations and is eligible on these models only.

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

Date of Application: July 25, 1962 Date Reissued: 9/4/92; 12/21/98; 8/31/00 Date of Issuance: September 20, 1962 Date Amended: May 20, 1982 Rev. 7 FEDERA AVIATION By Direction of the Administrator (Signature) ser S. Frances Cox TOMINISTRATO Manager, Special Certification Office, Southwest Region (Title)

INSTRUCTIONS. The transfer endorsement below may be used to notify the appropriate FAA Regional Office of the transfer of this Supplemental Type Certificate.

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

Signature of grantor (In ink):

C FAA AC 69-5536