STC SR03465CH

Part 27of the 14 Code of Federal Aviation Regulations. *

Original Product--Type Certificate Number

Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-ECD-084-280, or AA-ECD-084-480 in accordance with the Installation Instructions, Report AA-ECD-084-280/480 Rev. A, dated June 5, 2015 or later FAA- approved revision.

1. The installer must determine whether this design change is compatible with previously approved modifications.

2. A copy of FAA accepted Instructions for Continued Airworthiness, Report no. AA-ECD-84-280/-480-ICA, Rev. IR, dated July 01, 2014 or later FAA accepted revision is required to this modification.

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

Airwolf Aerospace, LLC 15369 Madison Road Middlefield, OH 44062

H1CE Make ENSTROM Model F28, F-28A, 280, F-28C, F-28C-2, F-28C-2R, 280C, F-28F, F-28F-R, 280F, 280FX, TH-28, 480, 480B Helicopters Date of application : February 23, 2012

Date of issuance : June 08, 2015

By direction of the Administrator Original Signed By:

Karol Mordasiewicz

(Signature) Karol Mordasiewicz Manager, Airframe & Administrative Branch Chicago Aircraft Certification Office

(Title)

FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES

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