@ Donal Barber
If you fired every professional in this industry that made a mistake you would soon not have anybody left. We are human and there for make errors. The trick is to have a system in place that traps errors before they become accidents. thta is why you engineers have dual inspections and the MM, and why there are two cockpit crew and SOP's. Firing the crew solves nothing and allows this error to happen again. The question should be what is wrong with the system and procedures in place that allowed a highly experienced and professional crew to make an error that did not get caught.
If you fail to address that then its just a matter of time before it happens again to someone else.