Passengers can’t jump from the aeroplane because aeroplane fly in 1000’s feet height how can some one jump from such height. Even if the passengers have parashute, there are hundreds of passengers inside and they all have to jump within a minute or two before crash. An other risk is that when they open the door of aeroplane the plane will loose its balnce before the crash time. When plane is in such sitauation, whole time pilot tried his best to save the flight from crashing so that’s why they do not allow to jump. Another risk is when the door of plane is open in high speed, the plane may get into fire due to air pressure. In such critical situation passengers just sit hopeless inside the plane.