Abstract: The method provides for an information presentation (IF1) to be presented on a visual-display screen (5), the information representing at least one vertical plane along a theoretical flight trajectory of the aircraft, and which includes an axis system (8, 9), in which a y-axis (8) is graduated in altitude, and an x-axis (9) is graduated in distance from the position of the aircraft, a particular symbol (7) representing the aircraft, which is arranged on the y-axis (8) at a position representative of the altitude of said aircraft, and a first plot (T1) representing a theoretical flight trajectory of said aircraft in the vertical plane. Said information presentation (IF1) further includes at least one second plot (T2) corresponding to a safety altitude, and a third plot (T3) corresponding to a contour of the terrain (10) in the vertical plane.