What was found
DURING DESCENT BOTH HYDRAULIC QUANTITIES WENT TO ZERO, PRESSURES REMAINED NORMAL. GEAR EXTENDED NORMALLY BUT PRESSURE ON NR 2 DROPPED TO ZERO, BUT RECOVERED TO 3000. DURING SHUT DOWN WHEN ENGINES WERE BROUGHT TO IDLE BOTH PRESSURES WENT TO ZERO. MAINTENANCE FOUND RIGHT INBOARD BRAKE LINE TO BE BROKEN AT THE LOWER FITTING. REMOVED AND INSTALLED A SERVICABLE LINE. LEAK CHECK GOOD, SERVICED BOTH HYDRAULIC SYSTEMS. OPS CHECK GOOD.