STC SR01171SE

United States of America Department of Transportation_Federal Aviation Administration Supplemental Type Certificate Number SR01171SE This certificate, issued to Aerometals 3920 Sandstone Drive El Dorado Hills, CA 95762 Part 6 of the Civil Air Regulations.

Original ProductType Certificate Number: H3WE Make: MD Helicopters Inc (MDHI) Model: 369HE, 369HM, 369HS, 369D, 369E, 369FF, 500N

Description of the Type Design Change: Fabrication of AMC AM369H8092 engine cooling duct orifice in accordance with AMC Master Drawing List No. MDL-AMC-012, Revision A, dated December 6, 2002, or later Federal Aviation Administration (FAA) approved revision. The orifice must be installed in accordance with AMC Installation Instructions MI-02002, Revision A, dated November 20, 2002, or later FAA approved revision. This modification must be maintained in accordance with AMC Instructions for Continued Airworthiness MI-02006, Revision IR, dated January 27, 2003, or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies to the rotorcraft models listed above only. This approval should not be extended to other rotorcraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effects upon the airworthiness of that rotorcraft. A copy of this Certificate and Instructions for Continued Airworthiness must be maintained as part of the permanent records of the modified rotorcraft.

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: November 5, 2002 Date reissued: March 1, 2005 Date of issuance: February 5, 2003 Date amended:

(Signature) Acting Manager, Seattle Aircraft Certification Office (Title)