Prioritizing alternative landing facilities in flight planning

摘要

A processor-performed method of aircraft flight planning. A decision point is identified along a route of the aircraft. The decision point and an anticipated range of the aircraft at the decision point are used to define an elliptical area substantially forward of the decision point and substantially along the route. Based on location of one or more landing facilities relative to the defined elliptical area, one or more of the facilities are selected as one or more alternative destinations.