STC SA3888WE

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate REISSUED TO REPLACE OSTH NAS REPORTED LOST. SA3888WE This certificate issued to: Northwest Airlines, Inc.

2700 Lone Oak Parkway Eagan, MN 55124 Pure 4B of the CiVil Air Regulations. dated December 31, 1953, Amendments 4b-1 through 4b-15. (Certification Briginal Bralet - Inpetitificate Number: AGWE stated in ... Data Sheet AbwE.

Make: McDonnell Douglas Model: DC-9-31, DC-9-32 Description of Type Design Change:

in accordance with the FAA sealed Hughes Air West Drawing List RW 2800200, Installation of an auxiliary fuel tank system in the forward baggage compartment Revision I, dated March 23, 1979, or later FAA approved revisions.

Hughes Air West FAA approved Airplane Flight Manual Supplement No. 1624-4, dated March 29, 1979, is required for this modification.

Limitatin and bendituna. The approval of this change in type design applies basically to the above listed models only. This approval should not be extended to other specific airplanes of these models 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 the above listed airplanes.

A copy of this STC must be included in the permanent records of the modified airplane.

Date of Application: August 22, 1978 Date Reissued: October 13, 1982, November 14, 1985 Date of Issuance: . March 29, 1979 Juleumended: May 25, 1979 FEDERAL AUTATION By dimpliget the Stifministretur W. F. Horn (Signature) TAMIN STRATOS Manager, Chicago Aircraft Certification Office, ACE-115C, Central Region, FAA (Title)

47.

FAA FOR 8110-2 (10-68)