What was found
ON DESCENT TO KMEM, GOT GREEN HYD RESERVOIR LO LEVEL. CONFIRMED ON OVERHEAD & ECAM. FOLLOWED QRH PROCEDURE & MANUAL EXTENDED GEAR AND SHUT DOWN AFFECTED EQUIPMENT. DECLARED EMERGENCY & STOPPED ON RWY. GREEN RSVR AIR CAME ON THEN QUAN FLUCTUATED. NO PUMPS OR SYS RUN W/O FLUID. AFTER LANDING QUAN NORM. FOUND GRN DEPRESS VLV STUCK OPEN. R&R GRN RSVR DEPRESS VALVE, LK CK OK. CK'D GRN SYS HYD DPI'S. NONE TRIPPED. RAN ENG'S. GRN EDP'S OPS CK OK. GRN ACMP'S OPS CK OK. LK CK OK.