As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ACFT WAS ON DESCENT WHEN THE CREW HAD OIL ODOR AND SMOKE IN CABIN. AFTER AN UNEVENTFUL LANDING, GROUND CREW REPORTED A LOW OIL LEVEL. AS THE ACFT FLEW BACK TO ITS BASE, OIL ODOR AND SMOKE IN CABIN APPEARED AGAIN DURING THE DESCENT. TROUBLESHOOTING ONGOING.