What was found
JFK - DURING WALK-AROUND INSPECTION, FUEL WAS FOUND LEAKING FROM INBD SIDE OF NR 2 PYLON ABOVE ENGINE. REMOVED L/E GAP COVER PANEL. FOUND FUEL FEED TUBE LEAKING DUE TO A HOLE CHAFED IN TUBE BY THE PNEUMATIC DUCT CLAMP. REMOVED TUBE AND ACCOMPLISHED A TEMPORARY REPAIR IAW MM 20-11-05. LINE REINSTALLED AND PRESSURE CHECKED IAW 28-22-00. LINE WILL BE REPLACED WITHIN 250 HOURS PER MM. PNEUMATIC DUCT CLAMP HAD ROTATED AGAINST FUEL TUBE BECAUSE ANTI-ROTATION SPRINGS WERE MISSING FROM CLAMP. FCD ISSUED TO CHECK OTHER PYLONS FOR SIMILAR CONDITION.