@CNN: Ever wondered what all those switches, dials and levers do in the cockpit of an airplane? We did too, so we asked a pilot: https://t.co/PdBB1WjVVR https://t.co/Vjv7oNEkcs

@CNN: Ever wondered what all those switches, dials and levers do in the cockpit of an airplane? We did too, so we asked a pilot: https://t.co/PdBB1WjVVR https://t.co/Vjv7oNEkcs