A method for transmitting flight parameters of a lead aircraft to an intruder aircraft. Transmission includes a collision avoidance system connected to which is a flight parameter transmission authorization system having a database including coordinates defining a volume of confidence smaller than the monitoring volume. The flight parameter transmission authorization system of the lead aircraft authorizes, only for an intruder aircraft identified as flying within the volume of confidence, transmission of at least one flight parameter of the lead aircraft, such that this intruder aircraft is able to calculate the position of centers of wake vortices generated by the lead aircraft or the flow strength of the wake vortices. Exchanging flight parameters of the lead aircraft only with intruder aircraft flying within the volume of confidence with limited dimensions makes it possible not to exceed the maximum capacity of the bandwidth of the automated communication.