es330td writes:

That wreckage looks brutal. It took me a while to figure out that
orange and white painted piece of metal was the trailing underside of
a wing.

What could be the cause? He was presumably a good pilot, and from what I
understand the weather was clear. And yet the news says it looks like the
aircraft hit the mountain head on. Mechanical failure? Sudden incapacitation
of the pilot? Bad piloting (seems unlikely, with all he had survived
previously)? Suicide?