Originally Posted by
FlexibleResponse
Watch ABC News video at 1:18 and note that main rotor separation occurs a lot later than tail boom and tail rotor.
That would seem to indicate that the tail boom failed first after extreme and rapid yaw.
That has been stated previously in this topic.
What is impossible to tell from the few pixels contained in these videos and related images, are what caused the extreme yaw.
Was it something in the tail rotor drive system that went, or, was it something in the main gearbox, transmission or mountings that let go first.
That is nothing the currently available videos can answer, beyond confirming a sequence of visible events.