PURPOSE: To secure the safety of a pilot when control is disabled, by turning-ON an emergent plane body restoration switch, preparing an operation signal for the transition to the level flight in a short time by a computer and operating a steering plane.

CONSTITUTION: When a pilot can not control a plane body, the pilot immediately turns-ON an emergent plane body restoration switch 3. Then, a computer 10 operates, and it is calculated and judged if the plane body collides with the ground surface when the transition to the level flight in a short time is performed, from the signals of an altitude sensor/transducer 6, speed sensor/ transducer 7, attitude sensor/transducer 8, and a CCD camera 9. If the answer is 'YES', an alarm speaker 2 is operated to generate alarm, and an emergency escape device is operated, and jets out a catapult seat 1. Further, an operation signal is sent into a driving device 5, and a steering plane 4 is operated so that the aeroplane travels on the safe place such as on the sea. When the answer is 'NO', an operation signal for the transition to the level flight in a short time is prepared, and sent into the driving device 5, and the steering plane 4 is operated to secure the transition to the level flight.