STC SR01376SE

Number SR01376SE

This certificate issued to Helicopter Transport Services, LLC 14497 Keil Road NE Aurora, OR 97002

Part 21.25(a) and (b) of the Federal Aviation Regulations.

Original ProductType Certificate Number: H14NM Make: Helicopter Transport Services Model: CH-54B

Description of the Type Design Change: Fabrication and installation of Helicopter transport Services, LLC offset pilot seat, offset collective control, and bubble door in accordance with Metal Innovations, Inc. Master Drawing List MII-0301, Revision 2, dated December 19, 2003, or later Federal Aviation Administration (FAA) approved revision. This modification must be maintained in accordance with existing instructions for continued airworthiness defined in the type certificate data sheet of the original product.

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 series unless the installer determines that the relationship between this change and any other previously incorporated approved modifications 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 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: June 6, 2003 Date reissued: January 9, 2014 Date of issuance: February 13, 2004 Date amended:

(Signature)

Manager, Seattle Aircraft Certification Office (Title)