STC SR00230SE

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SRO0230SE This certificate issued to: Columbia Helicopters P.O Box 3500 Portland, OR 97208.

Part 21.25(a)(2) and (b) of the Federal Aviation Regulation Original Product -Type Certificate Number: H40NM Make: Sikorsky Model: CH-54A, Restricted Category only Description of Type Design Change: Fabrication and installation of an external cargo support beam, upper cargo hook and load cell system in accordance with an FA approved copy of Columbia Drawing List No.

C54E2003-DL, Revision C, dated August 28, 1995.

Limitations and Conditions: Approval of this change in type design applies to basic Sikorsky Model CH-54A rotorcraft as defined on Restricted Category Type Certificate No. H40NM. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the relationship between this change and any of those other previousy approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft.

Rotorcraft equipment with this external loading system must be operated in accordance with Columbia Rotorcraft Flight Manual Supplement No. 95010005, dated September 5, 1995, or later FAA approved revision. The modified rotorcraft must be maintained in accordance with Columbia Maintenance Manual No. 95010007, Revision A, dated August 25, 1995, or later approved revision.

NOTE: None of the basic rotorcraft operating limitations have been changed by virtue of this installation.

Date of Application: September 17, 1993 Date Reissued:

Date of Issuance: September 5, 1995 Date Amended:

EDERAL AVIATION By Direction of the Administrator (Signature) TOMINIST RATION Acting Manager, Seattle Aircraft Certification Office (Title)