SLF query: if both engines were knocked out, would the cabin lights die? Or do they run off battery power for a bit? Or would the RAT have deployed?
RAT would have deployed automatically.
It only gives power above 140 knots (I think) and they would probably have tried to land slower than that. Looking at the intact hull I'd say the impact happened at very low speed.
Lights would have been on battery power.
One BBC 'expert' reckoned he could see from the pictures that one engine was fully intact. That may turn out to be the case but it is not possible to tell from any picture I've seen if either engine was functional.