Originally Posted by
Ex Cargo Clown
As a French speaker, I'm going to tootle around next Saturday in my little pond-hopper and speak French around the circuit, as after all it is an ICAO language. Let us see how much chaos that causes, and how much trouble it gets me in.
Well, if you do it at a French airport you should be ok.
If you want to do it in Manchester, then you are not allowed, but you can use the local language: English.
Exactly like you can use Italian in Italy, Spanish in Spain, German in Germany and so on.
Local language or English, as per ICAO