As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, RIGHT ENGINE OIL QUANTITY FELL AS OIL PRESSURE BEGAN TO FLUXUATE FROM 42 PSI TO 30 PSI. RIGHT ENGINE WAS SHUTDOWN DUE TO LOW OIL QUANTITY AND EMERGENCY DECLARED. FLIGHT LANDED WITHOUT FURTHER INCIDENT. AIRCRAFT WAS GROUNDED. MAINTENANCE REPLACED BACKUP RING AND O-RING ON RIGHT ENGINE OIL FILTER COVER DRAIN PLUG IAW AMM 79-21-10 AND PERFORMED SATISFACTORY OPERATIONAL CHECK PER AMM 71-00-00, NO LEAKS NOTED.