What was found
EWR - FLT 1477 - THE A-SYSTEM HYDRAULIC QUANTITY DROPPED TO ZERO WHILE ON DESCENT INTO EWR. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND NR 1 ENGINE A-SYSTEM HYDRAULIC PRESSURE LINE IN LEFT WING ABOVE LEFT GEAR LEAKING. THE LINE WAS REPLACED USING FLEX LINE AND A DIP WAS ISSUED TO REPLACE THE FLEX LINE WITH RIGID LINE WITHIN 500 FLIGHTS OR 1200 HOURS, WHICHEVER COMES FIRST. (X)