Aviation is dependent on communication, navigation and surveillance services to operate safely.
It thus has radio frequency spectrum allocated for its exclusive use to ensure that no other transmissions will interfere with the aeronautical services and - endanger its safe operation. The aeronautical communication services are designed, tested and then certified to high safety quality standards to ensure that there is secure communication between the pilot and controller and the aircraft and ground systems. The high availability of the systems is essential to ensure that a communications channel is almost immediately available when required during the flight of an aircraft. Harmful radio interference will affect the performance of the navigation system and therefore should be avoided. The aeronautical surveillance services are to inform pilot and controller on air traffic to ensure the most efficient use of airspace and runways.