STC SA3564WE

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA3564WE This certificate issued to: Northwest Airlines, Inc.

2700 Lone Oak Parkway Eagan, MN 55124 Part 4b* of the Civil Air Regulalina. *Certification basis is set forth in T.C. Data Sheet ABWE, Rev. 12, Make: The Boeing Company Model: 727-2M7 Lescription f Sype I esign tihange:

Installation of auxiliary fuel tanks in the forward and aft belly cargo/baggage compartments in accordance with FAA sealed Hughes Airwest Master Drawing List RW 2800 050, Revision F, dated November 16, 1977, or later FAA approved revisions.

Hughes Airwest FAA approved Airplane Flight Manual Supplement No. 1473, with weight and balance - Attachment "A", dated January 20, 1978 to the FAA approved Boeing Model /2/-2M/ AFM Document No. D6-8728.2M7 is required.

The type design changes described above are applicable to Boeing Model 727-2M7 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.

Date of Application: April 13, 1976 I ate resued: October 13, 1982 November 14, 1986 Jate of canunce January 20, 1978 I ate a ended:

FEDERAL AVIATION By dirketen at the staministrater W. F. Horn (Signature ) TOMINISTEAIO Manager, Chicago Aircraft Certification Office, ACE-115C, Central Region, FAA (Title)