ocean, almost anywhere in the indian ocean to the surface, it s going to be about two miles. you can t go along the surface and say listen for it here, but you can try. but your chances of hitting that range are very limited. all those things come together, that s why as you noted moments ago you could be very close to the source and still have quite a hard time finding it. one of the hallmarks of almost all airplane searches. and some of them can make it very, very difficult, ashleigh. makes you feel a little bit more hopeless as if the size of this entire search wasn t hopeless enough. in fact, what you just said, david on last night with anderson cooper and he just happened to mention he went over his old maps from the air france wreckage and noticed they were right on top of that old wreckage and didn t even know it. it s so distressing to hear that. actually, as luck would have it i have just been told by my producer we have david gallow who is available. david, can you hear m
unprecedented situation all the way around, piers. barbara, stay with us. want to bring in david suse author of why planes crash. aviation expert jim tillman and matthew robinson, air safety investigator. welcome to all of you. let me start with you, jim tillman. we ve talked before this week about the various twists and turns quite literally of the fate of this plane. what do you make of these extraordinary new revelations? well, they re just about as confusing as everything else i ve heard about this event from the very beginning. for example, let s talk about pings. it s my understanding that the devices don t ping until they are hitting water, until they get into water. and the pings went on and all of a sudden stopped over the indian ocean. that s just the opposite of the way that i have always understood them to work. that that should be when they really start going. the other thing is, i got to
want to bring in david suse author of why planes crash. aviation expert jim tillman and matthew robinson, air safety investigator. welcome to all of you. let me start with you, jim tillman. we ve talked before this week about the various twists and turns quite literally of the fate of this plane. what do you make of these extraordinary new revelations? well, they re just about as confusing as everything else i ve heard about this event from the very beginning. for example, let s talk about pings. it s my understanding that the devices don t ping until they are hitting water, until they get into water. and the pings went on and all of a sudden stopped over the indian ocean. that s just the opposite of the way that i have always understood them to work. that that should be when they really start going. the other thing is, i got to tell you that i find it very difficult to believe that this captain and his crew decided to
ground and is on land. well, that didn t go off. and also i wonder where it is. just like everybody else. okay. let me turn now to david suse, former faa safety inspector. we don t have the answers here. this is one of the great mysteries in aviation history and gets more mysterious by the day. having said that we have more information than we seem to have had at any stage in this week. if you take the assumption that these pings it s interesting i thought what jim tillman just said, the pings themselves, is that correct? do you know when they are supposed to go off? do they go off when a plane is at normal altitude or are they supposed to just work when a plane hits the water? i m out of the acars system which is a data link which provides information from the aircraft continuously if the satellite as available, continuously from that aircraft.
okay. let me turn now to david suse, former faa safety inspector. we don t have the answers here. this is one of the great mysteries in aviation history and gets more mysterious by the day. having said that we have more information than we seem to have had at any stage in this week. if you take the assumption that these pings it s interesting i thought what jim tillman just said, the pings themselves, is that correct? do you know when they are supposed to go off? do they go off when a plane is at normal altitude or are they supposed to just work when a plane hits the water? i m out of the acars system which is a data link which provides information from the aircraft continuously if the satellite as available, continuously from that aircraft. so it s intended to provide all the information that john mentioned before from wall street is the engine