For the movie, see Flightplan. For how a flight plan is icao flight plan form pdf, see Flight planning.
For the Japanese video game developer, see Flight-Plan. Flight plan format is specified in ICAO Doc 4444. In most countries, flight plans are required for flights under IFR, but may be optional for flying VFR unless crossing international borders. Flight plans are highly recommended, especially when flying over inhospitable areas, such as water, as they provide a way of alerting rescuers if the flight is overdue.
For IFR flights, flight plans are used by air traffic control to initiate tracking and routing services. For VFR flights, their only purpose is to provide needed information should search and rescue operations be required, or for use by air traffic control when flying in a “Special Flight Rules Area”. Routing types used in flight planning are: airway, navaid and direct. A route may be composed of segments of different routing types.
For example, a route from Chicago to Rome may include airway routing over the U. Europe, but direct routing over the Atlantic Ocean. Airway routing occurs along pre-defined pathways called flight paths. Airways can be thought of as three-dimensional highways for aircraft.
In most land areas of the world, aircraft are required to fly airways between the departure and destination airports. 1000 vertical feet from aircraft on the flight level above and below. Airways usually intersect at Navaids, which designate the allowed points for changing from one airway to another. The airway structure is divided into high and low altitudes.