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 CLIMBOUT, THE CREW OBSERVED THE LOW OIL PRESSURE WARNING LIGHT AND THE OIL PRESSURE INDICATION DROPPED TO ZERO. THE PRESSURE RECOVERED, DROPPED TO ZERO AGAIN AND ONCE AGAIN RECOVERED WITH NO FURTHER ISSUES. THE CREW ELECTED TO RETURN TO BASE AS A PRECAUTION. THE ENGINE WAS NOT SHUTDOWN IN FLIGHT. TROUBLESHOOTING OF THE OIL SYS IS ON-GOING.