Hello,
I fly everyday out of montreal YHU and you will be safer if you can speak both French And English. You have french speaking pilots that don't know a word of english and english speaking pilots that don't know a word of french. ATC is excellent both in french and english. I adapt my language to the area and I sometimes have to do traffic advisories in both french and english.
As for the safety issues, I believe that in the smaller airports around Quebec it would be more dangerous to have english only as many pilots who fly in those areas do not speak English or their English is poor. We can not expect some guy to learn English if he never leaves Quebec airspace.
Absolutely
