What was found
FLT 705, JFK-SJU, HYD BLUE LOW DURING CLIMBOUT, AIR RETURN TO JFK. FOUND BLUE PUMP PRESS SWITCH LEAKING. REMOVED AND REPLACED BLUE ELECTRICAL PUMP PRESSURE SWITCH AS PER MM 29-12-17, OPS CHECK AND LEAK CHECK OK, SERVICE BLUE HYD SYSTEM TO LIMITS.