STC SA6042NM

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA6042NM This certificate issued to: TDG Aerospace, Inc.

2180 Chablis Court, Suite 106 Escondido, California 92029 Jart 25 of the Federal Aviation Requlations.

Original Product Type Certificate Number : A6WE Make: McDonnell Douglas Model: DC-9-81, -82, -83, -87, and MD-88 Description of Type Design Change: Installation of NOFOD Overwing Anti-Ice System in accordance with FAA approved TDG Master Drawing List E93-104, Revision E, dated August 16, 1993, or later FAA approved revision. FAA approved Airplane Flight Manual Supplement TDG Document E93-096 dated September 9, 1993, or later FAA approved revision, is required as part of this installation.

Limitations and Conditions: The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. 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: July 30, 1992 Date Reissued: December 9, 1994; December 9, 1998;

October 26, 2000; October 31, 2001, Date of Issuance: September 24, 1993 November 13, 2003; September 15, 2004;

January 21, 2020 FEDERAL AVIATION By Direction of the Administrator Date Amended: November 15, 1996 (Signature) TOMNISTRATIO Manager, Technical & Administration Support Section, Los Angeles ACO Branch (Title)

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