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From those black boxes will be things like what altitudes was the aircraft at. what was the rate of descent. what were the engines doing, what was the rpm doing, the pressure doing and so on and so forth. so this is the first step in the investigation. >> we are now being told that the aircraft -- the airline has confirmed the debris is from the aircraft. it is from the aircraft. so this is the aircraft that they have been searching for. the airline confirms that. david rothgoth in miami, let me ask you in terms of the search now ongoing, no longer a rescue the search mission, how is it employ...

It have to have been done after the sign-off, but we also have to say it is selective fire, it is only shutting off the acars, the transponder, but not the auto pilot. >> mike, you agree with that? >> well, sean, i think it is important to know the limitations of what is going on in the cockpit of a jet, so i'm going to have to punt this one over. >> i think absolutely yes, you have the transponder in the acars units going into it. you have all sorts of feeds, what are the engines doing, the cabin pressure? you have all of these speeds going into the cockpit and so there is a high chance that ...

It have to have been done after the sign-off, but we also have to say it is selective fire, it is only shutting off the acars, the transponder, but not the auto pilot. >> mike, you agree with that? >> well, sean, i think it is important to know the limitations of what is going on in the cockpit of a jet, so i'm going to have to punt this one over. >> i think absolutely yes, you have the transponder in the acars units going into it. you have all sorts of feeds, what are the engines doing, the cabin pressure? you have all of these speeds going into the cockpit and so there is a high chance that ...

It have to have been done after the sign-off, but we also have to say it is selective fire, it is only shutting off the acars, the transponder, but not the auto pilot. >> mike, you agree with that? >> well, sean, i think it is important to know the limitations of what is going on in the cockpit of a jet, so i'm going to have to punt this one over. >> i think absolutely yes, you have the transponder in the acars units going into it. you have all sorts of feeds, what are the engines doing, the cabin pressure? you have all of these speeds going into the cockpit and so there is a high chance that ...