As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, THE ENGINE LOW OIL PRESSURE WARNING ANNUNCIATED AND THE PILOT SHUT THE ENGINE DOWN IN FLIGHT. A SUBSEQUENT INSPECTION WAS UNABLE TO IDENTIFY CAUSE AND THE ENGINE WAS REMOVED FOR INVESTIGATION. THE ENGINE HAD EXPERIENCED A SIMILAR LOW OIL PRESSURE INDICATION AND PILOT-COMMANDED IN-FLIGHT SHUT-DOWN TWO WEEKS PRIOR. P&WC WILL MONITOR INVESTIGATION OF THE EVENT AND WILL ADVISE OF ROOT CAUSE ONCE DETERMINED.