STC SA2-636

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2-636 This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Part SRA07 of the Civi1 Ai I Regulations.

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

Empennage modifications in accordance with Howard Aero, Inc. Drawing List SD503000A dated 7/19/62, or later FAA approved revision. Modifications include saddle back fairings, angle of incidence, tail cone, and elevator extensions.

Date of Application: August 29, 1958 Date Reissued: 7/10/92; 12/21/98; 8/31/00 Date of Issuance: October 23, 1958 Date Amended: May 28, 1982 Rev. 12 By Direction of the Administrator CoPs. Frances Cox (Signature) TOMINSTRATOT Manager, Special Certification Office, Southwest Region (Title)

PAA Form 8110-2(10-68) Page 1 of 3

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number 522-636 Date of Issuance: October 23, 1958 Date Amended: May 28, 1982 Reissuance Date: August 31, 2000 Limitations and Conditions: (Continued):

1. Howard Aero, Inc. CAA Approved Lockheed 18 Airplane Flight Manual Supplement dated 10/23/58 is required with Lockheed 18 modification.

2. Modification is eligible only on Lockheed 18 airplanes with modified flap and trailing edge per STC SA2-346.

3. Eligible with or without spring cartridge assembly per Howard Aero, Inc.

Dwg. 1650 dated 8/2/58.

4. This STC is part of the basic Howard 250 and H250 Tri-Gear configurations and the modification is covered in the flight manuals for these models.

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

- END-

FAA Forn 8110-2-1(10-69) Page 3 of 3

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