As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CYLINDER CRACKED FROM TOP SPARK PLUG HOLE TO BOTTOM SPARK PLUG HOLE AROUND THE EXHAUST VALVE. HEAD OPENED UP BY THE EXHAUST VALVE AND BLEW OUT THE SIDE AND BURNED FINS OFF THE CYLINDER. ENGINE SKIPPED AND RAN ON THE OTHER 5 CYLINDERS. CYLINDER BURNED PRETTY BAD BY THE TIME ACFT LANDED.