Three observations on the previous postings:-
1) ATC/pilot communications in non-English is not restricted to France!
2) FANS 1 A/B (CNS-ATM) will reduce the voice communications considerably, but many aircraft will require a more robust method of contacting the pilots -Northwest A320
.
3) Before anyone rushes to condemn the French language - as much as 60% of current English is derived from French (mainly thanks to William the Conqueror)!
That said - I agree that SA is compromised when non-English is used and the requirement for ATC/pilots to attain a level of proficiency in English, for reasons of safety, do not (in my opinion) go far enough - it should be mandatory when non-state registered aircraft are operating on the frequency in use.
Preumably Air France undergo LOSA checks?