As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE (TPE), NR 1 HYDRAULIC SYSTEM QUANTITY WENT TO ZERO. TURNED NR 1 HYDRAULIC PUMP OFF AND AIRCRAFT CONTINUED TO NRT AND LANDED WITHOUT INCIDENT. AIRCRAFT WAS TOWED OFF THE RUNWAY TO THE GATE. REPLACED THE NOSE LANDING GEAR DOOR ACTUATOR. OPERATIONAL CHECK GOOD.