As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE EN ROUTE TO PHL, CREW REPORTED GREEN HYDRAULIC ENGINE 1 PUMP LOW PRESSURE INDICATION FOLLOWED BY GREEN SYSTEM LOW FLUID LEVEL INDICATION. FLIGHT CONTINUED TO PHL WHERE ALTERNATE EXTENSION WAS REQUIRED. CREW DECLARED AN EMERGENCY, LANDED WITHOUT INCIDENT AND WAS TOWED TO THE GATE. MAINTENANCE REMOVED AND REPLACED THE NR 1 ENGINE HYDRAULIC PUMP IAW AIRBUS MAINTENANCE MANUAL 29-11-51-400-041. ALSO REPLACED THE CASE DRAIN FILTER AND CARBON SEAL.