STC SH505NW

This Certificate issued to Siam Hiller Holdings, Inc.

925 M Street Firebaugh, California 93622 Part 6 of the Civil Air Regulations. effective January 15, 1951 Original Product Type Certificate Number :

4H10 Hiller UH-12D (including helicopters modified by STC SH177WE) Description of Type Design Change: Installation of a cargo release pedal in accordance with the FAA approved Soloy Conversions, Ltd. Drawing List No. 560-141.

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 interrelationship between this change and any of those other previously 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 rotorcrafts. 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.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application: July 14, 1977

Date of issuance: August 23, 1977

Date reissued: 05/28/91; 11/30/95; 08/19/05

Date amended: 05/28/91

( Signature)

Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)