As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING REVENUE FLIGHT, THE PILOT NOTICED A LOSS OF OIL PRESSURE. THE ENGINE POWER WAS REDUCED TO IDLE. THE OIL PRESSURE RETURNED IN THE NORMAL RANGE AT IDLE. THE PILOT DECIDED TO KEEP THE ENGINE AT IDLE AND DIVERTED THE FLIGHT TO THE HOME STATION. THE ON GROUND INVESTIGATION SHOWED THE OIL LEVEL WAS BELOW MINIMUM. THE TROUBLESHOOTING IS IN PROGRESS.