These doors very effectively mean that control of the plane would be put into the hands of the cabin crew, but magnifies the cost of a rogue operator -- I am certain the risks were evaluated and the challenge of a determined suicidal pilot was ruled outside scope. And yes, there are emergency override codes, but there are also time override-overrides from within the cabin. Even if the protocol where two members of st…
I too wondered how many where saved by this. It certainly was debated before (here a german article from a year ago, closing with the cynical words "Than you're also dead, but at least save from terrorists. How comforting." http://www.austrianwings.info/2014/05/verriegelte-cockpittue... )
"Was geschieht, wenn sich ein Pilot zur Toilette begibt, sein Kollege im Cockpit - aus welchen Gründen auch immer - das Bewusstsein verliert oder verstirbt (solche tragischen Fälle kommen durchaus vor) und der nun außerhalb des Flightdecks befindliche Pilot plötzlich keinen Zutritt mehr zur Steuerzentrale des Flugzeuges hat? "
What happens if one pilot visits the WC and his colleague in cockpit - for whatever reason - loses his consciousness (such tragic cases do happen) and yet the pilot outside of the flight deck has no more access to control center of the aircraft?
It almost foresaw what was to happen on flight 4U9525.