As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 5639 - CREW NOTICED RIGHT HYDRAULIC QUANTITY REDUCING. QUANTITY DROPPED TO 0.19 AND CREW SECURED PUMP OFF. AN EMERGENCY WAS DECLARED WITH ATC. TAXI TO GATE WITH NO ADVERSE SYSTEMS EFFECTED. CORRECTIVE ACTION: MAINTENANCE REPLACED THE RIGHT ENGINE DRIVEN HYDRAULIC PUMP AND THE ANTI-SKID SHUTTLE VALVE. OPERATIONAL CHECK AND LEAK CHECK WERE GOOD WITH NO SHIFT IN HYDRAULIC QUANTITY. THE AIRCRAFT HAS RETURNED TO SERVICE. (LP #7451308)