Method and apparatus for guiding an aircraft at landing

The method involves determining a change-over point (12) which is found on a flight trajectory (T0). The point (12) corresponds to a point where an aircraft (A) quits the trajectory (T0) for reaching a start point (8) of a flight trajectory (T1) of tactic touchdown phase in predetermined flight conditions. The point (12) is utilized for guiding the aircraft between the trajectories (T0, T1). The predetermined flight conditions concern a predetermined speed, a predetermined altitude, a predetermined aerodynamic configuration of the aircraft, a rate of deceleration, a schedule of paradrop, and a maximum ground slope coupled with the altitude of the paradrop. Independent claims are also included for the following: (A) a device for guiding an aircraft (B) an aircraft comprising a guiding device.