What was found
DURING APPROACH B-SYSTEM QUANTITY BEGAN TO FLUX BETWEEN .8 AND 1.3 GALLONS, ON LANDING B-PRESSURE BEGAN TO FALL. LOW PRESSURE LIGHTS ILLUMINATED FOR AILERONS, RUDDER, ELEVATOR ON B-PUMPS. FOUND NR 1 GROUND SPOILER LEAKING. REMOVED AND REPLACED GROUND SPOILER ACTUATOR PER MM 27-61-91. SERVICED HYD FLUID, CHECKED B-SYSTEM HYD PUMP CASE DRAIN FILTER, NO CONTAMINATION FOUND.