Abstract :
The language of international aviation communication, especially between
pilots and air traffic controllers (ATCs) via radiotelephony, is English. Annex 10 to
the Convention on International Civil Aviation, Aeronautical Telecommunications, in
Volume II, Communications Procedures, and Chapter Five, Aeronautical Mobile
Service (paragraph 5.2.1.1.1), recommends the following:
In general, the air-ground radiotelephony communications should be
conducted in the language normally used by the station on the
ground.