As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE RIGHT HYDRAULIC QUANTITY DECREASED TO .67. THE ENGINE DRIVEN PUMP DE-PRESSURIZED AND THE ALTERNATING CURRENT MOTOR PUMP WAS SELECTED OFF. MAINTENANCE INSPECTED AND REPLACED THE FILTER MODULE RELIEF VALVE IAW B767 29-11-17. OPS AND LEAK CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.