STC SA5915NM-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 Make: Boeing Model: 747-222B Description of Type Design Change: Installation of Aircraft Communications Addressing and Reporting System (ACARS) for Flight-deck Data Communications in accordance with United Air Lines DAS-1-WE Approved Drawing List No. 5915 dated May 30, 1993, or later FAA approved revisions.

Limitations and Conditions: This approval should not be extended to ot her 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 a pproved modifications will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this STC must be included in the permanent records of the modified 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.

Date of application : May 14, 1993

Date of issuance : May 30, 1993

Date reissued : November 30, 2011

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

Transfer the ownership of Supplemental Type Certificate Number

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from (Name of grantor) (Print or type)

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U.S. GPO 1987-763-28