What was found
FLT 46, HNL-ITO: HYDRAULIC FLUID QUANTITY DECREASING DURING GEAR RETRACTION. RETURNED TO HNL. UNEVENTFUL LANDING. WHILE ON GROUND, HYDRAULIC FLUID QUANTITY CONTINUED TO DECREASE SLOWLY. MAINTENANCE FOUND LEAKS AT THE NR 2 THRUST REVERSER LINE AND NR 4 SPOILER OUTBOARD ACTUATOR LINE AND B-NUT. REMOVED AND REPLACE THE NR 2 TR HYDRAULIC LINE. OPS AND LEAK CHECK OK. REMOVED AND REPLACED THE HYDRAULIC LINE AND B-NUT ON THE NR 4 SPOILER OUTBOARD ACTUATOR. OPS AND LEAK CHECK OK. AIRCRAFT RETURNED TO SERVICE.