BALLSOUT: it was a little bit less than that, but not much less dramatic and still 100% fatal. I dont know which would have been worse, unable to get in, or stuck helpless for 10 minutes/
Re: Helios
SKYbrary - B733, Helios Airways, Athens Greece, 2005 (HF LOC)
That scenario is something to consider though (i'm getting a bit off topic) but we need to have a procedure to empty the air in the cabin, coupled with an air quality monitoring system - in conjunction with better scrubbers and filters.
Regarding the door, I believe the simplest and safest would be dual system where the door gets an unlock request and waits for an override for the pilots before it responds and opens.
So if there is no conscious pilot, then the door will open.
There could be a 'duress' code, where the door wont open at all when it receives that code.
Don't get me started on not being allowed to have my wife on a flight deck jumpseat though........
Or a 15 year old son? Eldar Kudrinsky