What was found
FLIGHT 2680, DURING DESCENT THE CREW NOTED THAT HYD. 2 LOW QTY MES ON EICAS, LOSS OF FLUID IN FLIGHT, DECLAIRED EMERGENCY, AND, PERFORMED EMERGENCY DESCENT. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE DRIVEN HYDRAULIC PUMP. PERFORMED A LEAK CHECK, AND, A OPERATIONAL CHECK, NO DEFECTS NOTED. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.