An aeronautical safety device which seeks to improve landing and take-off operations of aircraft, having a simple device which, by means of light means and push buttons or actuators indicating the instructions received, allow reflecting the instructions received from the control tower on a panel or in any other enabled point or by the senior cabin crew members themselves. The device has a casing on which at least two display indicators are arranged. One of them would serve for indicating that permission for takeoff or landing has been received, while the other light indicator would exclusively serve to indicate that the cabin is secure. The display indicators indicating that the instruction to initiate takeoff or landing has been received can range from light indicators to simple hinged flaps.