What was found
THE A-SYSTEM HYDRAULIC LOW PRESSURE LIGHTS FLICKERED AND THE A-SYSTEM HYRDAULIC QUANTITY GAUGE READ ZERO ON APPROACH PRIOR TO GEAR AND FLAP EXTENSION. THE HYDRAULIC FAILURE CHECKLIST WAS COMPLETED AND A MANUAL GEAR EXTENSION WAS PERFORMED. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE HYDRAULIC PRESSURE LINE BEHIND FRONT SPAR, OUTBOARD OF RIGHT MLG LEAKING. THE LINE WAS REPAIRED IAW GMM 10-799-78 AND A DIP WAS ISSUED TO REPLACE THE LINE WITHIN 1,200 HOURS OR 500 FLIGHTS, WHICHEVER COMES FIRST.