What was found
MIDDLE LEFT WING, INBOARD RIGHT WING AND INBOARD LEFT STABILIZER BOOTS FAILED IN FLIGHT. RETURNED TO SEA. REMOVED AND REPLACED LEFT MIDDLE WING DE-ICE PRESSURE SWITCH IAW MM30-10-05. REMOVED AND REPLACED INBOARD WING AND STABILIZER EJECTOR VALVE IAW MM30-10-0. REMOVED AND REPLACED MIDDLE WING EJECTOR IAW MM 30-10-04. RAN ENGINES AND OPS CHECK DE-ICE BOOTS ON GROUND.