make the beacons, and they verified that it looks like the beacon signal. the one sonabuoy ping that we did pick up appears to have been discarded. i assume they did a signal analysis on it and determined it didn t meet the profile. i m going to defer to the experts here, they ve seen the data. who s going to decide the batteries on the black boxes are definitely dead? who s going to decide when those batteries are certainly dead? and that they re going to submerge that bluefin-21 to do a check on the bottom of the ocean there? well, i assume they ll zdefe to the folks on the ship. it s the navy and the folks from phoenix international that are actually running the towed pinger locaters. they probably have talked to the beacon manufacturers and they ve heard between 30 and 40 days is all that we can expect. for all we know, the beacons are done or they could be just getting so faint that we re not
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and whole lot of nations involv involved. inevitably there will be some fog there. but could also be something else. we ve put questions in to the km chinese government and awaiting their response. david mckenzie, thank you very much. if the batteries still work, this is what it sounds like when a black box sends off a beacon signal. so are the reported pulse signals the chinese ship heard the real thing? for answers we spoke with jeff di dinsmore whose company helps make pingers, delivered the original flight data recorders put on flight 370. obviously we need to wait and see or get evidence of what was heard and for how long, but it is a very unique sound. it s at a very fixed frequency and it s a very, like you said, the ticking of a clock. it s very repeatable and very
planes leaving from perth, australia. a chinese crew just a few hours ago says their equipment caught some pings from the bottom of the ocean on a frequency mainly used by flight data recorders. here s how the chinese news service reported it. this afternoon, the rescuers have heard the ping signal every second and the signals lasted for one minute and a half. 1 1/2 minutes. however, the rescuers say this signal at this frequency is not exclusive for the plane s black box, so there is possibility that this kind of signal is from some other equipment. so this means they still cannot confirm the signals are from the missing plane. at about the same time those pings were detected, a search crew in the air says they flew over some white objects floating in the water. this is a picture of one of them. the reporting pings and this newfound debris are adding some cautious new energy to a
was or the co-pilot was busy because he was grabbing a cup of coffee. but it still does offer at least something? not from my perspective, it does not. what is important, don, is the consistency of the audio information that we re hearing. what that means is when you listen to the voice on start up and delivery frequency, is that the same voice that you hear right up until the very last piece on the transcript, or are there two voices that are consistent in terms of that. let s talk about the black boxes now. if the battery still works this is what it sounds like when a black box sends off a beacon signal. are the reported pulse signals that a chinese ship heard, are they the real thing.