What was found
DURING CLIMB, THE LEFT HYDRAULIC QUANTITY WAS LOSS TO .03, LEFT ENGINE PUMP PRESSURE LIGHT CAME ON, THEN LEFT ELECTRICAL HYDRAULIC PUMP PRESSURE LIGHT CAME ON. BOTH PUMPS WERE SHUT OFF, HAD TO USE ALTERNATE FLAPS AND ALTERNATE GEAR EXTEND. REPLACED LEFT LANDING GEAR DOWN LOCK ACTUATOR RETURN FLEX LINE, LEAK CHECKE DOPS CHECKED GOOD PER MM. (M)