As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NR 1 HYDRAULIC SYSTEM FLUID QUANTITY DROPPED STEADILY DURING FLIGHT TO EWR. THE AIRCRAFT LANDED AT EWR WITHOUT INCIDENT. MAINTENANCE FOUND THE NR 1 LT ENGINE DRIVEN HYDRAULIC PUMP LEAKING. THE HYDRAULIC PUMP WAS REMOVED AND REPLACED. THE HYDRAULIC SYSTEM WAS SERVICED TO FULL. LEAK AND OPERATIONAL CHECKS WERE GOOD.