STC SA2480WE

This Certificate issued to Northrop Grumman Systems Corporation 21240 Burbank Blvd.

Woodland Hills, California 91367-6675 Part 4b of the Civil Air Regulations Original Product Type Certificate Number :

A3WE Boeing 727-1H2

Description of Type Design Change: Addition of INS Attitude Reference data to Flight Instruments in accordance with FAA Sealed Litton Aero Products Division Top Drawing 454012-01 and FAA approved Litton Systems, Inc., Aero Products Division Supplementary Revision to Boeing Airplane Flight Manual D6-8727.62 dated February 15, 1972, or later FAA approved revision.

Limitations and Conditions: The approval of this change in type design applies basically to this model only. 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 : February 10, 1972

Date of issuance : February 15, 1972

Date reissued : April 12, 2016

(Signature) Supervisor, Technical & Administrative Support Staff (Title)

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Number (STC No.)