Method of detecting and displaying a collision hazard for an aircraft, by generating a consolidated warning relating to avoiding an obstacle by a vertically upward maneuver

A method of generating and displaying a consolidated warning making use of collision avoidance warnings as generated by various collision avoidance systems (TCAS, HTAWS, OWS, FMS, N) fitted to an aircraft. The consolidated warning is generated in application of a selection criterion for selecting collision avoidance warnings that relate to the aircraft performing an obstacle avoidance maneuver vertically upwards. The consolidated warning is displayed in the form of a plurality of display elements comprising display elements arranged as superposed strips. A first strip indicates the presence of an obstacle to be avoided by a vertical avoidance maneuver, and a second strip that is segmented to indicate the bearing position of said obstacle relative to the aircraft.