What was found
RNO FLIGHT NR 2256: AFTER START, DURING ELEVATOR CHECK, THE ELEVATOR PRESS LIGHT IS EXTINGUISHED INTERMITTENTLY, NR 3 HYD PUMP IS ILLUMINATING MOMENTARILY AND HYD PRESSURE 3 VALUE IS FLUCTUATING FROM 3200 PSI TO 700-800 PSI UNDER LOAD. AIRCRAFT RETURNED TO BLOCK. MAINTENANCE SERVICED THE NR 3 MAIN AND BOOTSTRAP ACCUMULATOR WS IAW D8-400 MM TASKS 12-10-29-614-801 AND 12-10-29-614-802. SERVICED THE NR 3 HYD FLUID LEVEL AND BLED THE NR 3 HYD SYSTEM. OPERATED THE SYSTEM NUMEROUS TIMES WITH NO FAULTS NOTED. OPS CHECK GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.