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 ACCOMPANIED BY A ROLL BACK IN ALL ENGINE PARAMETERS. THE PILOT SECURED THE ENGINE AND THE FLIGHT DIVERTED TO POINT OF DEPARTURE. SUBSEQUENT INSPECTION REVEALED EXTERNAL OIL LEAKAGE AND A TURBOMACHINE CHIP DETECTOR INDICATION. P&WC WILL MONITOR THE INVESTIGATION OF THE EVENT AND WILL ADVISE OF ROOT CAUSE, ONCE DETERMINED.