What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During cruise flight aircraft engine began to run rough, and the pilot observed a low engine oil indication. After landing at the nearest airport with the engine still running, the pilot observed a no oil pressure indication and shut the engine down. An internal inspection of the engine identified that at least I tappet face had broken off and susequently damaged the remaining tappets. The zero oil pressure indication was caused by the tappet material blocking the oil screen. Engine had been overhauled by an FAA certificated repair station that inspected, reconditioned and reinstalled the tappets. Overhaul was completed at 3972 engine hours. Engine totaltime was 5868 at the time of the incident.
As the FAA filed it
DURING CRUISE FLIGHT AIRCRAFT ENGINE BEGAN TO RUN ROUGH, AND THE PILOT OBSERVED A LOW ENGINE OIL INDICATION. AFTER LANDING AT THE NEAREST AIRPORT WITH THE ENGINE STILL RUNNING, THE PILOT OBSERVED A NO OIL PRESSURE INDICATION AND SHUT THE ENGINE DOWN. AN INTERNAL INSPECTION OF THE ENGINE IDENTIFIED THAT AT LEAST I TAPPET FACE HAD BROKEN OFF AND SUSEQUENTLY DAMAGED THE REMAINING TAPPETS. THE ZERO OIL PRESSURE INDICATION WAS CAUSED BY THE TAPPET MATERIAL BLOCKING THE OIL SCREEN. ENGINE HAD BEEN OVERHAULED BY AN FAA CERTIFICATED REPAIR STATION THAT INSPECTED, RECONDITIONED AND REINSTALLED THE TAPPETS. OVERHAUL WAS COMPLETED AT 3972 ENGINE HOURS. ENGINE TOTALTIME WAS 5868 AT THE TIME OF THE INCIDENT.