STC SR02641SE

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SRO2641SE This certificate issued to: Northwest Heli-Structures, Inc.

3911 Spur Ridge Lane Bellingham, WA 98266 Part * of the * Regulations.

Original Product -Type Certificate Number: * See attached Federal Aviation Administration (FAA) Make: Approved Model List (AML) SR02641SE for approved Model: aircraft models and applicable airworthiness regulations Description of Type Design Change: Installation of a Service Deck in accordance with Installation Instructions DM1518-6 Revision A, dated May 26, 2019, or later FAA approved revision. Manufactured in accordance with Master Drawing List as listed on AML SR02641SE dated May 3, 2019, or later FAA approved revision. Maintained in accordance with the Instructions for Continued Airworthiness (ICA) as listed on AML SR02641SE dated May 3, 2019, or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies to the rotorcraft listed on AML SR02641SE only. This approval should not be extended to other rotorcraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the relationship between this change and other previously approved modifications will introduce no adverse effect upon the airworthiness of that rotorcraft.

A copy of this certificate, AML SR02641SE, and ICA, 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: January 9, 2018 Date Reissued:

Date of Issuance: May 3, 2019 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Nancy marsh ADMINISTRATION (Signature fov Acting Manager, Seattle ACO Branch (Title) The ST's supporting documentation (drawings, instructions, specifications, fight manual supplements, etc.) is the property of the STC holder. An STC holder who allows a person to use the SIC to alter an aircraft, aircraft engine, or propeller must provide that person with written permission acceptable to the FAA. (Ref. 14 CFR 21.120).

FAA FORM 8110-2 (5/14) PAGE 1 OF 2 PAGES