As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT EXPERIENCED OIL PRESSURE LOSS RT ENGINE WHILE INCRUISE. SHUTDOWN AND A/C LANDED WITH NO OTHER INCIDENT. ENGINE WAS REMOVED. INSPECTION FOUND ONE LOOSE VACUUM PUMP RETENSION NUT. WHEN PUMP AND ADAPTOR REMOVED GASKET FOUND TORN AREA NEAR LOOSE NUT. THIS AREA COVERS AN OIL JET WHICH IS NOT USED FOR THIS VACUUM PUMP INSTALLATION.