Originally Posted by
MSPeconomist
I would assume so, but there could be exceptions for domestic flights in some areas. For example, would a general aviation pilot in the center of France be forced to speak English? I don't know.
I believe it varies from country to country. If I'm not mistaken, Chinese pilots in China speak Chinese to ATC. On the other hand, I believe Japanese pilots in Japan speak English to ATC. Could be very wrong on that though LOL.