STC SA3953WE-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.

A20WE

Boeing

747-122 Description of Type Design Change : Increases the seating arrangement from 26F/348Y to 26F/387Y by revising the seat pitch in Zones B, C, D, and E in accordance with DAS-1-WE Approved United Air Lines Drawing List No.

3953, or later FAA approved revision.

Limitations and Conditions: The approval does not extend to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously 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 the 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 18, 1980

Date of issuance: November 26, 1980

Date reissued: November 30, 2011

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

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