CHC pays lip-service to the highest safety standards, then do just whatever they need to stop anyone making waves - well it's rapidly backfiring against them in Nigeria now with even more expats wanting to leave and actively looking - and there's plenty of work out there.
Local pilots go to FS if they can get visas, but it doesn't matter, because pass or fail, they'll still be there on the line as soon as they get back, exactly the same as the expats
