130  Hercules, equipped with turboprop (a jet engine whose power turbine  drives a gearbox that drives the propeller)engines. When a jet  engine dies, it just winds down (as the only moving parts are the  compressor and turbine and the entire reaction stops when the fuel  is cut off). Only engines with pistons make a sputtering sound as  they run out of fuel (this comes from certain pistons not receiving  fuel while others still are).