Method to assist with piloting an aircraft in flight, said aircraft comprising: - a structure, - an image capture device, - a first measuring device for determining an attitude of said aircraft, - a second measuring device for determining a height of said aircraft with respect to an area overflown by said aircraft, - a display device, and - a computer, said method comprising the following steps: - determining an attitude of said aircraft with said first measuring device, - determining a height of said aircraft with respect to said overflown area with said second measuring device, - capturing at least one image of said overflown area with said image capture device, - displaying on the display device a representation of said overflown area, said representation comprising said at least one image, - calculating, by means of said computer, a first position on said representation of a vertical projection on said overflown area of a first reference point of said aircraft as a function of said attitude and said height, displaying on said display device a symbol representing said aircraft, a point of origin of said symbol being positioned at said first position, characterised in that said method further comprises the following steps: - calculating, by means of said computer, a second position on said representation of a vertical projection on said overflown area of a second reference point of said image capture device as a function of said attitude, - displaying on said display device a horizon circle representing a horizon line, said horizon circle being centred on said second position, said diameter of said horizon circle being constant. - a structure, - an image capture device, - a first measuring device for determining an attitude of said aircraft, - a second measuring device for determining a height of said aircraft with respect to an area overflown by said aircraft, - a display device, and - a computer, said method comprising the following steps: - determining an attitude of said aircraft with said first measuring device, - determining a height of said aircraft with respect to said overflown area with said second measuring device, - capturing at least one image of said overflown area with said image capture device, - displaying on the display device a representation of said overflown area, said representation comprising said at least one image, - calculating, by means of said computer, a first position on said representation of a vertical projection on said overflown area of a first reference point of said aircraft as a function of said attitude and said height, - determining an attitude of said aircraft with said first measuring device, - determining a height of said aircraft with respect to said overflown area with said second measuring device, - capturing at least one image of said overflown area with said image capture device, - displaying on the display device a representation of said overflown area, said representation comprising said at least one image, - calculating, by means of said computer, a first position on said representation of a vertical projection on said overflown area of a first reference point of said aircraft as a function of said attitude and said height, displaying on said display device a symbol representing said aircraft, a point of origin of said symbol being positioned at said first position, characterised in that said method further comprises the following steps: - calculating, by means of said computer, a second position on said representation of a vertical projection on said overflown area of a second reference point of said image capture device as a function of said attitude, - displaying on said display device a horizon circle representing a horizon line, said horizon circle being centred on said second position, said diameter of said horizon circle being constant. - calculating, by means of said computer, a second position on said representation of a vertical projection on said overflown area of a second reference point of said image capture device as a function of said attitude, - displaying on said display device a horizon circle representing a horizon line, said horizon circle being centred on said second position, said diameter of said horizon circle being constant.