As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
60 MINUTES INTO FLIGHT, RT ENGINE OIL PRESSURE WENT AMBER. 20 MINUTES LATER OIL PRESSURE DROPPED AND RED WARNING PANEL ILLUMINATED. CHECKLIST COMPLETED AND ENGINE WAS SHUT DOWN. LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE RT STARTER SHAFT SEAL AND SERVICED OIL. OPERATIONAL CHECKED GOOD. AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.