As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLOCKED OIL RETURN LINE DUE TO OIL COKING. LOW OIL PRESSURE CAUTION ILLUMINATED AND PILOT MADE EMERGENCY LANDING SAFELY. THIS CONDITION CAUSES OIL TO FLOW INTO THE EXHAUST AREA AND BURNS THE OIL CAUSING SMOKE. THIS SMOKE WAS SMELLED IN CABIN BY PILOT UPON LANDING.