As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW INFLIGHT T963/20OCT - RIGHT HYDRAULIC QUANTITY LIGHT ILLUMINATED WITH LOSS OF PRESSURE. FLIGHT DUMPED 33000 POUNDS OF FUEL AT FLIGHT LEVEL 330. FOUND DAMAGED O-RING IN RIGHT PYLON. LANDED DFW WITHOUT INCIDENT. REPLACED RIGHT ENGINE DRIVEN PUMP AND BOTH FILTERS. SYSTEM GROUND CHECKED NORMAL OPERATION.