A method for aiding the ground navigation of an airplane in an airport, according to which method the series of following successive steps is carried out, in an automatic and repetitive manner: a) the current values of a plurality of parameters of said airplane are determined; b) with the aid of said current values, a first position relating to the airplane is determined; c) this first position is compared with at least one predetermined prohibited zone (Zl) of the airport; and d) if said first position is situated in said prohibited zone (Zl), at least one alert signal is emitted, in step b), a first position is determined which corresponds to an extrapolated position of the nose of said airplane after a particular time interval starting from the current instant, during the ground navigation of said airplane on the airport, and to determine said first position: - a predetermined reference point of the airplane is taken into account; - in step a), we measure:. the current position of said reference point;. the current speed of said reference point;. the current direction of the airplane; and. the current yaw rate of the airplane; and - in step b), successively:. with the aid of the current position of said reference point, of the current direction of the airplane and of a vector offset between the nose of the airplane and said reference point, the current position of the nose of the airplane is determined;. with the aid of the current speed of said reference point, of the current yaw rate of the airplane and of the vector offset between the nose of the airplane and said reference point, the current speed of the nose of the airplane is determined; and. with the aid of said current position and current speed thus determined of the nose of the airplane, as well as said particular time interval, said first position is determined which therefore corresponds to an extrapolated position of the nose of the airplane at the conclusion of said time interval. a) the current values of a plurality of parameters of said airplane are determined; b) with the aid of said current values, a first position relating to the airplane is determined; c) this first position is compared with at least one predetermined prohibited zone (Zl) of the airport; and d) if said first position is situated in said prohibited zone (Zl), at least one alert signal is emitted, - a predetermined reference point of the airplane is taken into account; - in step a), we measure:. the current position of said reference point;. the current speed of said reference point;. the current direction of the airplane; and. the current yaw rate of the airplane; and. the current position of said reference point;. the current speed of said reference point;. the current direction of the airplane; and. the current yaw rate of the airplane; and - in step b), successively:. with the aid of the current position of said reference point, of the current direction of the airplane and of a vector offset between the nose of the airplane and said reference point, the current position of the nose of the airplane is determined;. with the aid of the current speed of said reference point, of the current yaw rate of the airplane and of the vector offset between the nose of the airplane and said reference point, the current speed of the nose of the airplane is determined; and. with the aid of said current position and current speed thus determined of the nose of the airplane, as well as said particular time interval, said first position is determined which therefore corresponds to an extrapolated position of the nose of the airplane at the conclusion of said time interval.. with the aid of the current position of said reference point, of the current direction of the airplane and of a vector offset between the nose of the airplane and said reference point, the current position of the nose of the airplane is determined;. with the aid of the current speed of said reference point, of the current yaw rate of the airplane and of the vector offset between the nose of the airplane and said reference point, the current speed of the nose of the airplane is determined; and. with the aid of said current position and current speed thus determined of the nose of the airplane, as well as said particular time interval, said first position is determined which therefore corresponds to an extrapolated position of the nose of the airplane at the conclusion of said time interval.