AN ALTERNATIVE PILOTING SYSTEM FOR INTEGRATING IN A PRE-EXISTING AIRCRAFT

An alternative piloting system arranged to be integrated in a pre-existing aircraft that includes original systems having flight control and autopilot systems. The autopilot system includes a piloting device independent of the original systems, having a positioning unit arranged to produce positioning data relating to the aircraft, and a control unit arranged to produce an alternative piloting setpoint for the aircraft; an acquisition and analysis device, including acquisition device arranged to acquire data produced by the original systems, positioning data and alternative piloting setpoint as produced by the piloting device, and decision device arranged to decide whether the alternative piloting setpoint should or should not be used for piloting the aircraft; and an interface device arranged to control the flight control system on the basis of the alternative piloting setpoint when the decision device of the acquisition and analysis device decide that said alternative piloting setpoint should be used for piloting the aircraft.