the mode s transponder gives more information but there s a time delay so we really don t know what that was what that ground speed was or that air speed on the radar was all about. there s a difference like you indicated, between what the airplane senses and the ground speed. so it s all subject to possible dis discrepancies. the climb seems extraordinary. they could have gone through a thunderstorm that causes a lot of updrafts in addition to downdrafts. so weather does seem to be related but, once again, we can t rule out anything. and i think it s important to determine flight breakup, which is a possibility, or a breakup once there was an impact with the water. what do you think, david? i think i agree with les and peter.
indicated air speed versus ground speed, and so these numbers are telling us what they are telling us is ground speed. if it was from mode-s transponder, which you mentioned there had been there would be more information available, so it s possible we didn t get the entire bucket of information available because the secondary surveillance radar, which is what the mode-s is should be giving us a little bit more information than what we have here should give us kias indicated air speed, as well which is the air speed relative to the airplane and not to the ground. that would give us a lot more information, but to me it looks as though if this information is correct, it looks as though there was an encounter of some kind of significant weather and the aircraft had stalled and had made a flat or dead pan spin stall. a dead pan spin stall, so what is that exactly? basically a flat spin. in other words, there s no significant air going over the top of the wing not enough air