As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT, RIGHT HYDRAULIC SYSTEM QUANTITY DROPPED TO 4 QUARTS. FLIGHT CREW REQUESTED EMERGENCY EQUIPMENT ON STANDBY AS A PRECAUTION. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND FITTING LEAKING AT RIGHT WHEEL WELL PRIORITY VALVE. REPLACED PACKING, LEAK CHECK WAS NORMAL.