that i've spoken to, that air speed is not sufficient to sustain flight at that altitude. so from this one screen grab in isolation, this is an err plane essentially out of control. just simply using the data if it is correct from indonesia. just quickly, could this still be weather related or mechanical? >> it -- i don't think it's mechanical. it's either weather related. perhaps the captain somehow or another was fooled by the weather. he blundered into a severe thunderstorm. much more severe than he thought. those updrafts can be up to is 00 mourks vertical updrafts up or down.