Patent ID: 7262730

Claim:
A method for assisting the control of an aircraft participating in an exercise with other aircraft of predefined identity comprising the steps: broadcasting data associated with the position, the velocity and the identity of said aircraft, receiving data associated with the position, the velocity and the identity of other aircraft, processing said data broadcasted and received for determining whether there is a risk that the predicted flight trajectory of the aircraft cross any predicted flight path of a said other aircraft, and if so delivering an alert for avoiding a later collision, wherein it also comprises the steps of: determining whether the aircraft is within a predefined first airspace volume ( 1 ) or not, said airspace volume being defined by geometrical dimensions and time of appearance and disappearance, by comparing information about said airspace volume with the position of the aircraft, making said delivering of an alert dependent upon this comparison by, when located in said airspace volume, not delivering any said alert with respect to other aircraft of said predefined identity, and when not located in said airspace volume, allowing said delivering of an alert with respect to aircraft of said predefined identity.