aeronautical fixed service
{{Short description|Telecommunication service used in aviation}}
The aeronautical fixed service (AFS) is a telecommunication service between specified fixed points provided primarily for the safety of air navigation and for the regular, efficient and economical operation of air services.ICAO: Air Traffic Services, Annex 11 to the Convention on International Civil Aviation, Chapter 1 Definitions. 2001. ("Air service" means any scheduled air service performed by aircraft for the public transport of passengers, mail or cargo.ICAO: Convention on International Civil Aviation, Doc 7300/9. 2006. http://www.icao.int/publications/Documents/7300_9ed.pdf) The AFS is provided by voice and data networks, including AFTN, AMHS and CIDIN.EUROCONTROL: AMC and European Aeronautical Fixed Service (AFS). 2012. {{cite web|url=https://www.eurocontrol.int/amc-and-european-aeronautical-fixed-service |title=AMC and European Aeronautical fixed service |accessdate=2013-08-19 |url-status=dead |archiveurl=https://web.archive.org/web/20130820003535/http://www.eurocontrol.int/amc-and-european-aeronautical-fixed-service |archivedate=2013-08-20 }}
However, any aeronautical radiocommunication between specified fixed points belongs – in accordance with article 1.20 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – to the Fixed service.ITU Radio Regulations, Section IV. Radio Stations and Systems – article 1.20, definition: fixed service / fixed radiocommunication service