Flight plan

A flight plan is a formal description of an intended flight, with details such as aircraft identification, route, departure time, level, destination and other relevant information. It is filed before flights that require it, such as many IFR flights and some VFR flights, especially when crossing borders or using controlled airspace. ATS uses it to support traffic management, alerting service and coordination between units. As a pilot, you must file it correctly, update it if the plan changes, and close it after landing when required.