speculated
that was never confirmed. as of 03/15/14 the atlantic reporting news
What about the 45,000-foot altitude claim, and the 40,000-feet-per-minute descent? Reports since last night speculated that the plane had climbed very high, and then descended very fast, perhaps indicating: an incompetent/amateur pilot; a professional pilot bent on disorienting the passengers or destroying the plane; or something else strange. To put this in perspective: in normal airline flights, you have rarely if ever been above 40,000 feet. Most airliners operate in the high-20s through the high-30s, in thousands of feet. Assuming that pressurization systems still worked, passengers wouldn't necessarily have noticed a difference at 45,000.
They certainly would have noticed a 40,000-fpm descent. In normal airline flights, you've rarely if ever felt a descent of more than 2,000-fpm. Most of the time, airliners go down by 1,000 - 1,500 fpm. Descending 20 or 30 times that fast would mean that the plane was pointed more or less straight down, with engines running.
So if this happened, it would have been remarkable, and terrifying. And among the problems would be pulling out of the dive without subjecting the plane (and crew and passengers) to G-forces beyond what any of them were designed to tolerate.
I deeply feel for the loss of life and their families.