TV, I think you would struggle to find any commercial airline to be 'know to be unsafe'.
By 'known to be unsafe' I meant countries, rather than carriers, that have signficantly higher hull loss rates than average, for example Nigeria, Nepal. Cubana (Crashes Regularly Before Arriving at Next Airport) used to be considered unsafe with a well above average FATAC rate, and the one that had Accidents Expected Regularly On F* Lethal Old Tupolevs was another. Both have cleaned up their acts significantly.
As for Air France, the main thing that puts me off flying with them is having to transit CDG.