al, Inc. ("Purchase•") that certain Sikorsky S-76C helicopter (sometimes referred to as a S-76C+) bearing Manufacturer's Serial No. 760472 and U.S. Registration Nu. N162Ali and two (2) Turbomeca Artie] 2S1 engines bearing Manufacturer's Serial Nos. 20040 and 20045, together with all avionics. equipment, system