illegal passports. in the cockpit the captain and first officer make the final preparations. oxygen, check. instruments, check. reporter: in the sim yu ulat pilot mitchell casado shows martin savidge the route. and programming the simulator how to fly to the destination. so it will take this plane essentially from kuala lumpur to beijing. reporter: and the plane is ready, and before taking off, paul weeks sends a message home. the last line says that this counts as one day, so it means that it is only 27 days until i see you all again. reporter: around 12:30 a.m., malaysian airlines 370 flight pushes back from the gate and eases toward the runway and the aircraft is cleared for takeoff. all right. so the brakes are off, and everything is set.