STC SA2347WE

600 Jefferson Street Houston, Texas 77002 Part 4b of the Civil Air Regulations dated December 31, 1953 (See Type Certificate Data Sheet 4A28).

4A28

Boeing

720-022 Description of Type Design Change: Installation of Door Mounted Inflatable Evacuation Slide;

Sargent Industries P/N 6176700 in accordance with FAA Approved United Airlines Drawing 9F9324 “Slide Installation – Aft Entry/Galley Door.”

Limitations and Conditions: This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this cha nge and any of those other previ ously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application: April 4, 1971

Date of issuance: May 4, 1971

Date reissued: November 30, 2011

( Signature) Haifa Haj-Eid Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)

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