The 18 minutes was from the time of the collision. The plane is reported to have continued down the runway for about a kilometre.
It also would appear that communications with the coughpit were taken out by the collision.
We’ll eventually find out, but I wouldn’t be surprised if just about everything failed. The impact has been pretty much right on the main electronics bay, and everything in that aircraft is computer controlled.
It would also take the FAs a little time to make sure which exits were safe from the fire.
10 seconds tops.
So I am still in awe of the FAs for getting everybody of including young children and I am sure a few older, less mobile folks.
That’s what they are there for…..when bags aren’t blocking the aisles.
So that is basically 10 people a minute down each exit available.
Which is an absolutely appalling rate.
I believe the reported 18 minutes is until the last person (the Captain I believe) went down the slide. It's possible that most of the passengers went down earlier and the Captain did a final check for remaining people, but we probably won't know for a while.
There’s going to be lots coming out about the evacuation, how it was done, and the timings. Looking at it now, JAL can probably consider themselves extremely lucky with regard to the outcome.
For instance, whilst we’re being told that the cabin crew can initiate the evacuation without instruction from the coughpit (in certain cases) feedback from a bloke I know who flew for them is that in practice that means that the hull would have to be in multiple pieces before they would. So basically, given the power, but then it’s been toned down by subservience. I don’t think there’s enough fear of fire inside the hull. The smoke will kill you, and if you wait until you see a flame, it’s too late.
Whilst calmly assessing what‘s going on before doing something extreme is what should generally be done in an aircraft, there are times when you should think a little differently. Basically, if in flight and it’s all falling miles outside of the ‘norm’ then it’s probably time for that ”mayday”. And the same here. The aircraft has fallen on to its nose on landing. Does it really matter why. The engines are going to be eating dirt, you have no idea what shape the structure is in. The coughpit is either full of warnings, or dark. Time to be elsewhere.