What was found
FLT 1616 - MCO - THE NR 1 ENGINE A-SYSTEM HYDRAULIC LOW PRESSURE LIGHT ILLUMINATED WITH THE HYDRAULIC QUANTITY GAUGE READING NEAR ZERO WHILE EN ROUTE FROM MIA TO GSO. THE AIRCRAFT WAS DIVERTED TO MCO AND WHILE ON SHORT FINAL THE 'B LOW QUANTITY' LIGHT CAME ON. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE A-SYSTEM HYDRAULIC PRESSURE LINE ALONG KEEL BEAM IN RIGHT WHEEL WELL CHAFED THROUGH. THE LINE WAS REPLACED USING FLEX LINE AND A DIP WAS ISSUED TO REPLACE THE FLEX LINE WITHIN 500 FLIGHTS OR 1200 HOURS, WHICHEVER COMES FIRST. (M)