STC SA01951NY-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA01951NY-D This certificate issued to: Wulfsberg Electronics Division 6400 Wilkinson Drive Prescott, AZ 86301 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specified hereen meet's the airworthiness requirement's of Purt * of the * Federal Aviation Regulations.

Original Product -- Type Certificate Number: * Sce attached FAA Approved Model List (AML) Make: * No. SR01951NY-D for list of approved aircraft models and applicable airworthiness regulations Model: * Description of Type Design Change:

Installation of Wulfsberg P-2000 and/or C-2000/RT-2000 Transceiver System with Approved Model List No. SA01951NY-D, No Revision, dated February 3, 2005 in accordance with Keystone Helicopter Installation Drawing List IDL00753, Revision A, dated January 14, 2005 or later approved revision.

1. For Instructions for Continued Airworthiness refer to keystone Helicopter Report No. IC00753, No Revision, dated December

2. FAA Approved Airplane Flight Manual Supplement, Supplement No. FM00753 Rev. -, dated February 3, 2005 or later FAA

3. Compatibility of this design change with previously approved modifications must be determined by the installer.

4. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person

5. A copy of this certificate and the FAA Approved Model List (AML) No. SA01951NY-D, issued February 3, 2005 or later FAA approved revisions must be maintained as part of the permanent records for the modified aircraft.

Date of Application: October 28, 2004 Date Reissued: March 18, 2005 Date of Issuance: February February 2005 Date Amended:

FEDERAL AVIATION By Direction of the Administrator (Signature) Anthony Socias TOMINISTRATO Acting Manager New York Aircraft Certification Office (Title)