Survey: ATC English language policy for various countries
Hi all, I'm a student and currently investigating ATC language issues as part of a report on cross-language interaction issues, and interested in seeing how various countries approach it.
Specifically, I am wondering, what the language policy for various countries (which are not native English speaking countries) are with regards to using English in ATC comms: is it only to be used, or is the native language also allowed to be used? If you're a pilot, what has been your observation flying around various country's airspaces and listening to the radio?
For example, I know that Japan and Hong Kong speak English only and Mainland China speaks English and Chinese.
How about other Asian countries, like Korea? And Europe, Africa, and Latin America?
If you have knowledge, please share it here. Thanks!