What was found
PILOT NOTICE LOSS OF POWER IN CRUISE FLIGHT, RETURNING TO AIRPORT DEBRIS AND SMOKE WAS NOTED EXITING THE ENGINE COWL. OFF AIRPORT LANDING WITHOUT INCIDENT. FOUND HOLE IN CRANKCASE INBOARD OF #4 CYLINDER. #4 CONNECTING ROD, PISTON PIN, AND OTHER PIECES OF THE CRANKCASE WERE FOUND ON TOP OF THE CYLINDER. DAMAGE WAS NOTED TO #4 CONNECTING ROD JOURNAL, FUEL INJECTOR LINE WAS SEPARATED FROM THE FUEL MANIFOLD, EVIDENCE OF A SHORT DURATION FIRE FROM THE FUEL MANIFOLD, SOME CHARRING OF IGNITION WIRING, FIRE SELF-EXTINGUISHED WHEN ENGINE WAS SHUTDOWN. OIL WAS NOTED ON DIPSTICK, APPROXIMATELY 3 QUARTS. A LARGE AMOUNT OF OIL WAS NOTED ON THE SIDE OF THE AIRCRAFT, PRESUMABLY FROM THE HOLES IN THE CRANKCASE. OIL CAP WAS INSTALLED ENGINE ROTATED HOWEVER SQUEALING SOUNDS WERE NOTED WHILE ROTATING CONSISTENT WITH A LACK OF LUBRICATION, CAUSE UNKNOWN AT THIS TIME. ENGINE TSMOH 526.3HRS, TIME SINCE LAST OIL CHANGE 46.4HRS.