As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 6496 DFW TO JFK IN CRUISE, CREW HAD A HYDRAULIC 2 LOW QUANTITY EICAS MESSAGE FOLLOWED BY LOSS OF HYDRAULIC 2 SYSTEM PRESSURE. CREW DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND A UNION FITTING CHAFED AND LEAKING AT NR 2 ENGINE HYDRAULIC PUMP HIGH PRESSURE LINE. REMOVED AND REPLACED FITTING. NR 2 ENGINE HYDRAULIC PUMP WAS REPLACED AS A PRECAUTIONARY MEASURE DUE TO LOSS OF SYSTEM 2 PRESSURE.