What was found
AIRCRAFT LEVEL FLIGHT 17,000 FEET NORMAL TORQUE FOR BOTH ENGINES. TEMPS NORMAL, FUEL FLOW NORMAL. LEFT ENGINE WENT TO ZERO TORQUE, FLUCTUATED SOME. EGT REMAINED BELOW RED LINE, FUEL FLOW WAS STILL NORMAL. OIL PRESSURE NORMAL. PILOT USED EMERGENCY CUT-OFF, FEATHERED PROP. ENGINE CAME TO A QUICKER THAN NORMAL STOP. AIRCRAFT LANDED AT SLC WITH NO PROBLEM. EXTREME HOT SECTION DAMAGE FROM EXTERNAL VIEW. NOT DISASSEMBLED AT THIS TIME.