Abstract: The invention relates to a device (1) comprising a set (2) of information sources for determining the active values of a plurality of parameter of an aeroplane, calculating means (3) for determining, by means of said active values, a first position corresponding to a position which is extrapolated from the nose of the aeroplane following a particular time interval from the current instant. The inventive device also comprises a database (5) provided with at least one pre-determined unauthorized zone of the airport, comparison means (6) for comparing said first position to said pre-determined unauthorized zone of the airport, and warning means (9) for emitting at least one warning signal if the first position is located in the unauthorized zone.