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 INITIAL CLIMB, 1 ENGINE OIL PRESSURE DROPPED TO ZERO FOLLOWED BY OIL SMELL IN CABIN. CREW SHUTDOWN AND SECURED THE ENGINE. ACFT RETURNED TO POINT OF ORIGIN WHERE AN UNEVENTFUL LANDING WAS PERFORMED. POST FLIGHT INSPECTION REVEALED NO ANOMALY, OIL WAS VISIBLE AT BOTTOM OF SIGHT GLASS.