Is clearance needed to use an airway?

Using an airway requires clearance, and it is mandatory to submit a flight plan to the Air Traffic Control Center (ATCC) prior to flight. This requirement ensures that air traffic is efficiently managed and that all aircraft can navigate safely within controlled airspace. The submission of a flight plan provides the ATCC with essential details about the intended flight, including the route, altitudes, and any other relevant information. This system helps to prevent conflicts between aircraft and ensures that air traffic control can provide the necessary support throughout the flight.

Other options incorrectly imply varying degrees of permission or restrictions that do not align with the mandatory procedures in place for using airways.