[Magician]

If an engine disintegrated as the initial event it will be very quickly apparent. Both engines came down on terra firma. It would take an experienced NTSB person about five minutes to determine if the engine had failed in flight.

[Fixit]

It would take an experienced NTSB person about five minutes to determine if the engine had failed in flight.

And three years to get around to finally announcing the conclusions of their investigation.