What was found
FLT 16 JFK-BTV A/C DIVERTED TO BOS WHILE AT 21000 GOT GREEN HYD LOW FLUID, PERFORMED ECAM ITEM AND DECLARED EMERGENCY. SHUT OFF ENG DRIVEN PUMP WITHIN 60 SEC, FOUND LEFT ENG HYDRO DISCONNECT CHECK VALVE 1050GM PACKING DAMAGED, REPLACED 1050 GM CHECK VALVE AND PACKING. NO LEAKS NOTED. RESET FREEFALL HANDLE 3 TURNS DOOR OPERATIONAL NORMAL. FLUID LEVEL WAS 2 GALS, EDP CASE DRAIN FILTER OK. PUMP NOT ACTIVATED. OK PER 29-00-00-281-051A.