Patent ID: 7053797

Claim:
A system for output of advisory information for aircraft, comprising: a stationary transmitting unit for transmitting advisory data, the transmitting unit including: a transmitter for transmitting the advisory data to at least a geographical target footprint of interest; and a processor for controlling transmission of the advisory data; and a receiving unit coupled to an aircraft, the receiving unit including: a positioning subsystem for determining a geographical location of the receiving unit; a receiver for receiving the advisory data from the transmitting unit; an output device for selectively outputting advisory information based on the advisory data and the geographical location of the receiving unit; and a transmitter for transmitting the geographical location of the receiving unit to the transmitting unit; wherein the advisory data relates to potential or actual entry of the aircraft into a protected area defined by the target footprint, with the proviso that the protected area not relate to position of the aircraft in relation to a second aircraft, wherein the transmitting unit selects the advisory data for output based at least in part on the geographic position of the receiving unit.