As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF NR 3 HYDRAULIC SYSTEM QUANTITY WENT TO NEAR ZERO. AIRCRAFT DUMPED 150,000 LBS OF FUEL AND RETURNED TO ANC, AND LANDED WITHOUT INCIDENT. ANC MAINTENANCE REMOVED AND REPLACED RUDDER ACTUATOR, AND NR 3 ENG HYDRAULIC PUMP. OPERATIONAL CHECKED OK, AIRCRAFT RETURNED TO SERVICE.