STC SA1128NW-D

This Certificate issued to United Air Lines, Inc.

600 Jefferson Street Houston, Texas 77002 Part 25 of the Federal Aviation Regulations. See Type Certificate Data Sheet A20WE for Special Conditions Original Product Type Certificate Number :

A20WE

Boeing

747-122 Description of Type Design Change : Installation of a video project system in accordance with United Air Lines, DAS-1-WE, Approved Drawing List No. 1128 dated December 19, 1981, or later FAA approved revisions.

Limitations and Conditions: The approval of this change in type design applies only to 747-122 aircraft. This approval does not extend to other specific airc raft of this model on which other previously approved modifications are incorporated, unless it is dete rmined by the installer that the interrelationship between this change and any of those other previ ously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. Th is determination should in clude consideration of significant changes in weight distribution such as increase in the fixed disposable weight in the fuselage.

If the holder agrees to permit another person to use th is 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: September 3, 1981

Date of issuance: December 19, 1981

Date reissued: November 30, 2011

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

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