Patent ID: 7668628

Claim:
A method of warning a pilot to prevent navigation of an aircraft into an unapproved region of operation, the method comprising: identifying a boundary of an approved region of operation for the aircraft based upon safety considerations such that the approved region of operation is a predetermined safe region of operation, the boundary of the approved region of operation being a boundary between the approved region of operation and an unapproved region of operation, and at least one unsafe region of operation being positioned in the unapproved region of operation, but spaced apart from the boundary of the approved region of operation; displaying on a display device a graphical designation of the boundary of the approved region of operation; determining a position of the aircraft relative to the boundary of the approved region of operation; and generating a warning, before a threat corresponding to the at least one unsafe region of operation is detected, if the determined position of the aircraft relative to the boundary of the approved region of operation is predictive of the aircraft departing the approved region of operation.