What was found
ON APPROACH SELECTED GEAR DOWN. THE LEFT MAIN GEAR AND DOOR WERE SLOW ENOUGH TO CAUSE A GEAR NOT DOWN ECAM, BUT CANCELLED A FEW MOMENTS LATER AS THE CYCLE COMPLETED. NORMAL OPS THEEAFTER. DISCOVERED MATERIAL IN L/H MLG RESTRICTOR VALVE. REMOVED AND REPLACED RESTRICTOR VALVE IAW AMM A300-600 32-31-57-04. PERFORMED NORMAL EXTENSION AND RETRACTION TEST WITH SYS 1 AND SYS 2 IAW AMM 32-31-00-5. OPS CHECKED GOOD. NO LEAKS NOTED ON RESTRICTOR VALVE.