STC SA1396WE

This Certificate issued to United Air Lines, Inc.

600 Jefferson Street Houston, Texas 77002

Part 4b of the Civil Air Regulations.

4A28 and A3WE

Boeing

720-022 and 727-22 Description of Type Design Change : Installation of McMillan Radome P/N 2406 as a replacement for Boeing Radome P/N 65-2040 in accordance to Approved United Air Lines Engineering Release No. 3 dated February 1, 1967 and Approved United Air Lines Change Order Authorization T-2057.

Limitations and Conditions: The approval of this change in the type design applies basically to Boeing Models 720 and 727 aircraft. This approval should not 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 airwor thiness of that aircraft. This approval is for the interchangeable use of the McMillan P/N 2406 Radom e with the existing Boeing P/N 65-2040 Radome. If the holder agrees to permit another person to use this cer tificate to alter the product, the holder shall give the other person written evidence of this 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: February 1, 1967

Date of issuance: April 25, 1967

Date reissued: November 30, 2011

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

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