As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING REVENUE FLIGHT, 5 MINUTES AFTER TAKEOFF, FLIGHT CREW REPORTED ODOR OF BURNING PLASTIC IN THE CABIN WITH A MIST OF SMOKE. PILOTS DECLARED EMERGENCY AND RETURNED TO AIRPORT OF ORIGIN. OIL STREAKING NOTED IN THE ENGINE EXHAUST.