Canadian Politics Today

I saw a video yesterday that outlined the final events of this flight based on radar traces. It showed this 767 descended for the last ~12 seconds @25000 ft/min. Just to confirm, 25000 was not a typo. No wonder it broke up when it hit but what would cause that kind of dive.

That is 284mph. That is certainly faster than the terminal velocity of a level airplane, I suspect even if it was in an unpowered nose dive that would be too fast. 12 seconds is 5000 feet above the water level, and I understand it turned when it was at about 8000 feet.