Very sad indeed!!! RIP
I have no idea what could have happened. I doubt it was a missing autohover. Night over water is a hostile environment and there is not much space for errors (technical or human). I just hope the accident investigation team finds out soon, what caused the crash.
As for some of the replies (on this and other threads), canīt you guys take your personal fight somewhere else. As much as I like to follow the rumours und ideas of what might have caused something, it really annoys me to read through all the bashing. As a native speaker that might be easy, for readers that are not as eloquently as you are, it is not.
sky