I'm reluctant to discuss this further as it relates to this accident because my points would require hypotheticals that point the finger at the crew, and I don't want to do that. Suffice to say that an airline can do their very best at hiring, training, and checking crews, but they ultimately have no direct control over what happens in the cockpit on a given flight.
Another point, if the airline have acted in accordance with their operations manuals, and those manuals have been approved by the FAA, then shouldn't the FAA be held responsible?