As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ONE HOUR INTO FLIGHT, THE RIGHT ENGINE 'ENGINE OIL PRESS LOW' LIGHT CAME ON. ENGINE THRUST WAS REDUCED AND EMERGENCY CHECK LIST WAS ACCOMPLISHED. AFTER 2 MINUTES, THE RIGHT ENGINE WAS SHUT DOWN AND AN UNEVENTFUL SINGLE ENGINE LANDING WAS MADE AT KLAS. UPON INSPECTION, A FAILED HYDRAULIC PUMP ACCESSORY GEARBOX SHAFT SEAL WAS FOUND THAT CAUSED LOSS OF OIL. RECURRENCE CONTROL: NONE. ISOLATED FAILURE.