Why shouldn't the crew be liable for the fine?
Maybe because the level of fine is set at a figure considered suitable as a penalty to be taken at an operator level, similar figures generally could wipe out an employee financially....the operator can certainly take action against said offender if found to be in error, but i would have thought the correct response would be to undergo any required re-training, assessment and all being well, monitoring of future performance in line with company SOP's, etc.. If more occurences occur, maybe something needs addressing with the crewmember concerned - after all, we are all human and prone to mistakes and are complicated machines in our own right. Oh, and the individual makes nowhere near the profit the company makes, therefore with all i've said before, the company i'm afraid in my opinion have to accept that mistakes will and do happen.