STC SA2787NM-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 A3WE.

Original Product Type Certificate Number : A3WE Make: Boeing Model: 727-222 Description of Type Design Change: Revise Seat Mix from 12F/135Y to 24FC/111Y. This will be done according to United Air Lines DAS 1WE Approved Master Drawing List No. 2787, dated April 12, 1991 or later FAA approved revision.

Limitations and Conditions: This approval should not be extended 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. This determination should include consideration of significant changes in weight distribution such as an increase in the fixed disposable weight in the fuselage. 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 : March 25, 1991

Date of issuance : April 12, 1991

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

to (Name of transferee)

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(City, State, and ZIP Code)

from (Name of grantor) (Print or type)

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Signature of grantor (In ink):

U.S. GPO 1987-763-28