STC SH5797NM

Number SH5797NM

This certificate, issued to Hillsboro Aviation, Inc.

3845 NE 30th Avenue Hillsboro, OR 97124

Part 7 of the Civil Air Regulations.

Effective August 1, 1956 Original ProductType Certificate Number: H1SW Make: Bell Model: 204B, 205A, 205A-1

Description of the Type Design Change: Installation, maintenance, and operation of an engine wash kit in accordance with Heli-Conversions, Inc. Manual No. 1872, “Installation of T53-HC Engine Wash Kit on Bell 205 & UH1,” dated October 17, 1992, or later Federal Aviation Administration (FAA) approved revision.

Limitations and Conditions: Approval of this change in type design applies to the above model rotorcraft 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 effect upon the airworthiness of that rotorcraft. A copy of this certificate must be maintained as part of the permanent records for the modified 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: February 11, 1991 Date reissued: April 12, 2013; June 7, 2016 Date of issuance: November 25, 1992 Date amended:

FAA FORM 8110-2-1 (10-69) PAGE 1 OF 2 PAGES By direction of the Administrator

(Signature)

Manager, Seattle Aircraft Certification Office (Title)