As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT DEPARTED FOR A 2 HOUR FLIGHT. THE PILOT NOTICED FLUCTUATION IN OIL PRESSURE AND REMAINED AT 8000 FT AGL UNTIL OVER THE AIRPORT. WHILE CIRCLING TO LAND, THE ENGINE FAILED TO PRODUCE POWER. PILOT LANDED SAFELY WITHOUT POWER ON THE AIRFIELD.