As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) RT ENGINE NR 5 CYLINDER PN LW12966 HAD A BURNED PISTON. PISTON ALSO ERODED AROUND RING LANDS. COMPRESSION LEAKING INTO CRANKCASE AND VENTING OIL OVERBOARD VIA BREATHER. INVESTIGATION FOUND THE TORCHING CAUSED BY A PARTIALLY BLOCKED INJECTOR NOZZLE.