A method to stop hijack of an airplane comprising:
- a) installing video monitors and audio monitors to cover every corner in passenger cabins, a cockpit and monitoring needed places;
- b) installing gas delivery system in the passenger cabins, cockpit and monitoring needed places for delivering gases inhalational general anesthetic which make people into a deep sleep;
- c) during cruise video and audio signals of the video and audio monitors being transmitted to a ground control center through radio;
- d) the ground control center monitoring received video and audio signals of the video and audio monitors, when a hijack is happened and cannot be stopped the ground control center issues a gassing order to the gas delivery system to discharge gases inhalational general anesthetic;
- e) the airplane is returned to a near airport by pilots or an auto driving system.