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Over the top of the wing to create lift. if there's no lift, of course, the aircraft falls down and the best thing to do at that point is to get the nose of the aircraft down and get enough air flow going over the wing to pick up speed, pick up forward speed, then at that point you have control of the aircraft but in a flat spin there's no control over the flight control surface really. >> like not flying a plane at all almost it seems. colonel we don't have the black boxes, obviously, but one of the victims, the bodies themselves are providing some evidence. one victim who has been identified...

Hail. windshield. many time had to hire acoustic experts to tell us the meaning of every click and sound in the cockpit. a wement ofalth of information. very important. >> you are saying the debris is indicating a textbook crash. the faa issued a warning pilots about a certain part of the a-320. what does that mean? >> an air worthiness directive, regarding the pito tube. if it was something sthalt was major and -- that was major and life threating it would be more than an air worthiness directive. 3,900 built. 3,500 flying. 3,200 are on order. in terms tough the integrity of this as an airpla...

Air is and velocity of the air. >> what might have been the issue? >> mike brought up a good point about air worthiness directives. believe what he is referring to is the indicator of a tach, air worthiness directive, on this aircraft. number 216, 320-216. 216 it did not apply to. 214 and 217. >> okay. mike, when weep get on a plane. we hear about flotation devices, is that a false sense of security. we have had so many the air crashes that we have had, have had so many people on them. we haven't had more this year. just more people have died. do those provide passengers really with a false se...

Indicate survivors or anything? >> it doesn't indicate survivors. it does indicate there wasn't anything significant or catastrophic in the air. if it would have. we were talking turbulence before. and talking things that would have stalled the aircraft and things like that. if the aircraft had stalled. in unrecoverable position it would have crashed into the, and broken into pieces. >> it doesn't indicate it stalled? >> no. >> what does it indicate? it is intact? what does it indicate? >> it indicates it may have stalled. a recoverable stall. able to get the air baktck over the air of the win...

Were not con sthus. we talked about that. mh-370. >> you can tell if they were conscious when they hit the watter? >> yes. want to warn people. there are people. family members who want to know this information. there are those that don't. what i would look to dupe is talk about what we do to determine if they were conscious or not, whether they knew what was happening. on the accident scene, when the bodies are retrieved. one of the first things we do is check for seawater in the lungs. and so when weep do that. it will give us clues. if there is seawater in the lungs it means they may have i...