As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING REVENUE FLIGHT, ON APPROACH, PILOT REPORTED OIL MIST AND ODOR IN CABIN, DECLARED AN EMERGENCY. A SINGLE ENGINE UNEVENTFUL LANDING WAS PERFORMED. ON GROUND INVESTIGATION, FOUND OIL STAINING AND DROPLETS ON PLENUM AND DIFFUSER. ENGINE TO BE REPLACED.