These can be navigational aids, published navigational points or points with specified coordinates. a danger area needs to be avoided) additional turning points can be specified. If for some reason this is not appropriate (e.g. In most cases the straight line between an entry point and an exit point will be chosen. fixed entry and exit points and the need to avoid danger areas, TRAs or TSAs) as opposed to the situation where standard airways should be used.
Source: EUROCONTROL ERNIP Part 1 Descriptionįree route airspace (FRA) is a concept of providing air traffic services in which an operator can choose their route subject to only a few limitations (e.g. Within this airspace, flights remain subject to air traffic control. Subject to airspace availability, the route can be planned directly from one to the other or via intermediate (published or unpublished) way points, without reference to the ATS route network. Free Route Airspace (FRA) is a specified airspace within which users may freely plan a route between a defined entry point and a defined exit point.
