The aeronautical fixed service (AFS) is a

telecommunication Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than tha ...

service between specified fixed points provided primarily for the safety of

air navigation The basic principles of air navigation are identical to general navigation, which includes the process of planning, recording, and controlling the movement of a craft from one place to another. Successful air navigation involves piloting an air ...

and for the regular, efficient and economical operation of air services. ("Air service" means any scheduled air service performed by aircraft for the public transport of passengers, mail or cargo.) The ''AFS'' is provided by voice and data networks, including

AFTN The Aeronautical Fixed Telecommunications Network (AFTN) is a worldwide system of aeronautical fixed circuits provided, as part of the Aeronautical Fixed Service, for the exchange of messages and/or digital data between aeronautical fixed stations ...

, AMHS and

CIDIN The Common ICAO Data Interchange Network (CIDIN) is a network, run by the International Civil Aviation Organization (ICAO), which makes up part of the aeronautical fixed service. It is used to transmit text or binary messages for the purposes of air ...

. However, any aeronautical

radiocommunication Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmit ...

between specified fixed points belongs – in accordance with ''article 1.20'' of the International Telecommunication Union's (ITU)

Radio Regulations Radio regulation refers to the regulation and licensing of radio in international law, by individual governments, and by municipalities. International regulation The International Telecommunication Union (ITU) is a specialized agency of the Unit ...

(RR) – to the ''

Fixed service In telecommunications, a fixed service (or fixed radiocommunication service) is a radiocommunication service between specified fixed points. Classification The ITU Radio Regulations (article 1) classify variations of this radiocommunication serv ...

''.ITU Radio Regulations, Section IV. Radio Stations and Systems – article 1.20, definition: ''fixed service / fixed radiocommunication service''

References

{{reflist Airbands Aviation safety Telecommunication services

See also

References