What was found
ECAM COMMAND GREEN HYD PUMPS OFF; COMPLETED ECAM STEPS, COMPLIED WITH QRH, DESCENDED TO FL310 MAX .65 MACH FOR KRUEGER LIMITATION. CONTINUED, EMERGENCY DECLARED, MANUALLY CRANKED DOWN GEAR, LANDED UNEVENTFULLY. NOTICED AFTER CRANKING GEAR THAT GREEN HYD QTY, RETURNED TO NORMAL INDICATION. GREEN HYD SYS WAS FOUND TO BE AT 2-2.5 GALLONS LOW. REQUIRES SERVICE. GREEN SYS PUMPS WERE SHUTOFF IMMEDIATELY AT LOW INDICATION AND WERE NOT RAN DRY. R & R RT NOTCH FLAP ACTUATOR IAW AMM 27-88-15-04. OPS AND LEAK CHECKED GOOD.