STC SA2355WE

600 Jefferson Street Houston, Texas 77002 Part 25* of the Federal Aviation Regulations * In accordance with original certification requirements set forth on Type Certificate Data Sheet A20WE Original Product Type Certificate Number :

A20WE

Boeing

747-122 Description of Type Design Change: Installation of Life Raft Assembly in accordance with FAA Approved United Air Lines Top Drawing 9F-9674, or later FAA approved revisions.

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 inter-relationship between this cha nge and any of those other previ ously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. 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: November 4, 1970

Date of issuance: August 17, 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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