STC SA554EA-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA554EA-D This certificate issued to: American Airlines, Inc.

Maintenance & Enginering Center Tulsa, Oklahoma 74151 Part 25 of the Federal Aviation Regelations.

Original Product Type bertificate Number: AWE 4A28 4A21 4A26 ASEU Make: Boeing Boeing Boeing Boeing British Aircraft Model: 727-23 720-023B 707-123B 707-323C 401AK Description of Type Design Change: 121-35 727-95 707-323B 727-123 727-223 Install underseat luggage retention device in accordance with Engineering Change Orders. A. 01423 Rev. A dated 2/11/69, Rev. B dated 3/16/69, and data as listed on Rev. D dated 12/3/69.

This approval should not be incorporated in any aircraft of this specific model on which other approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those previously incorporated approved modifications will not introduce any adverse effect upon the airworthiness of the aircraft.

re) TO MINISTRATO Coordinator DAS 1 EA (Title)

47.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and Z1P code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP code) Exent of Authority (if licensing agreement) :

Signature of grantor (1n ink) :