What was found
DURING FLIGHT, THE FUEL FLOW DROPPED OFF UNTIL THE ENGINE TORQUE DROPPED ENOUGH TO FEATHER THE PROPELLER. THE CREW THEN SHUT THE ENGINE OFF WITH THE FUEL CONDITION LEVER. MAINTENANCE FOUND THE 4 SCREWS (THAT WERE SAFTIED) HOLDING THE PRESSURE RELIEF ADJUSTMENT PLATE ONTO THE LOW PRESSURE FUEL PUMP LOOSE, AND FUEL LEAKING, SUSPECT AIR WAS BEING INTRODUCED INTO THE FUEL SYSTEM HERE AND CAVITATED THE HIGH PRESSURE PUMP CAUSING LOSS OF FUEL TO FCU. (X)