As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING A REVENUE FLIGHT OUT OF AIRPORT AT APPROXIMATELY 6800 FT IN CRUISE CONFIGURATION, THE LT ENGINE EXPERIENCED AN OIL PRESSURE FLUCTUATING DOWN BELOW 40 PSI ACCOMPANIED BY LOW OIL PRESSURE WARNING. THE ACFT RETURNED TO AIRPORT AND PERFORMED AN UNEVENTFUL LANDING.