STC SA5634NM-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.

A20WE

Boeing

747-422 Description of Type Design Change: Installation of High-Gain Satellite Communication (SATCOM) voice system for cabin public telephone in accordance with United Air Lines, DAS- 1-WE, Approved Drawing List No. 5634 dated May 5, 1992, or later FAA approved revisions.

Limitations and Conditions: This approval does not extend to other aircraft of this model on which other previously approved modifications ar e 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 e ffect 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: April 1, 1992

Date of issuance: May 5, 1992

Date reissued: November 30, 2011

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

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