Originally Posted by
PastTense
My thought is it would take substantially longer than this to evacuate all the passengers with some injured.
The certification requirement is that it can be done (and demonstrated) in 90 seconds. They got
870 people out of an A380 in 77 seconds in its test.
But yes, real-world factors will change the actual performance. Injuries can occur in the evacuation itself, or even post-evacuation (flying blobs of burning fuel, etc.) That'll all come out eventually.