STC SR505CH

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SRSOSCH This certificate issued to: Fargo Manufacturing Co.

2312 N. 17th Avenue Franklin Park, IL. 60131 Part 21 of the Federal Aviation Regulations. (See Type Certificate Data Sheet No.

H19NM for complete certification basis.)

Original Product -- Type Certificate Number: H19NM Make: McDonnell Douglas Helicopter Systems Model:

MD-900 Description of Type Design Change:

Install Fargo Manufacturing Auxiliary Fuel System in Aft Cabin Baggage Bay in accordance with Fargo Installation Drawing A-900, Rev. D, dated January 6, 1996 or later FAA-Approved revision, and Installation Manual, Rev. C, dated April 29, 1996 or later FAA- Approved revision.

1) The installer must determine whether this design change is compatible with previously approved moditications

2) Fargo Manufacturing Co. Rotorcraft Flight Manual Supplement, Rev. A, FAA-Approved May 2, 1996 or later FAA approved revision is required.

3) If the holder agrees to permit another person to use this certificate to alter the product, the holder must give the other person written evidence of that permission.

suspended, revcked or a ternination date is otherwise established by the Administrater of the Federal Aviation Administration Date of Application: April 13, 1995 Date Reissued: December 1, 2016; February 7, 2020 Date of Issuance: May 2, 1996 Date Amended: May 23, 1996 By Direction of the Administrator (Signature) Monica L. Nemecek TOMINISTRATIO Manager, Airframe and Administrative Services Section Chicago ACO Branch (Title)