What was found
ON TAKEOFF ROLL AT ABOUT 25 KTS AND AS POWER WAS BEING APPLIED, PILOT HEARD LOUD BANG FOLLOWED BY CHIP DETECTOR LIGHT AND SEVERAL CAS MESSAGES. PILOT ABORTED TAKEOFF, REDUCED POWER, AND TAXIED OFF RUNWAY. THE PROPELLER HAD STOPPED BUT THE GAS GENERATOR SECTION WAS STILL RUNNING UNTIL THE PILOT CUT FUEL TO SHUTOFF ENGINE. POWER TURBINE BLADES DEPARTED THE FIRST AND SECOND STAGE DISCS AND TOOK OUT THE ADJACENT POWER SECTION VANE RINGS. DEBRIS INCLUDING POWER TURBINE BLADES DEPARTED THE ENGINE THRU THE EXHAUST AND IMPACTED THE WING LEADING EDGES AND UPPER SKINS LEAVING SLICES IN THE PNEUMATIC DEICE BOOTS AND NICKS/GOUGES ON THE SKIN. MFG HAS REMOVED THE ENGINE AND IS CURRENTLY INVESTIGATING. ENGINE TREND DATA AND ACFT MONITORING DATA DOES NOT APPEAR TO INDICATE ANY OPERATIONAL ANOMALIES THAT MIGHT CAUSE PT BLADES TO DEPART.