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CNN CNN Newsroom April 20, 2014 23:56:00

Best sound was located, the ping that was the most promising. now, if the bluefin comes up with nothing after continued observations, at least it will have eliminated this part of the indian ocean as a place where the plane is likely to be. but then that means let s go back and look at the evidence that we had in the first place and see if there s a wider area that might make sense to explore. they have to go back and look at that data again. michael, the other phase of the search, we talk about subsurface and surface, how would you rethink the air search, if you spend another few days and don t see any floating debris? great question. i think we really do need to take our hats off and just really realize how the search tempo has been really impressive from the australian air crews. you have the u.s. navy, you have the australian air crews and the ....

Bluefin 21 , Indian Ocean , Lets Go Back , Air Search , Michael Holmes , We Don T , Air Crew , Search Tempo , Us Navy ,

CNN CNN Newsroom April 19, 2014 21:18:00

Absolutely exhausted every single piece of it. that s the subsurface. the above surface is different. the maritime surveillance aircraft. looking for floating wreckage. looking for floating wreckage. they cannot equivocally tie the two together unless he gets some sort of wreckage. they are limitations not only human factors but there are also limitations on the engineering of the aircraft and how long they can supply for on various levels of servicing that have to be achieved the longer they go on. we have to treat them separately. fair point. they ve been going at an incredible pails for well more than a month. arthur, i wonder, if you are looking and you have a pretty good confidence because of the pings you ve refined the search area to 300 square miles or so, why stop after five or seven days with the sonar scan as you re looking for that wreckage in that area? right. well, i think what s going on is this we the areas that are being searched in addition to the pings re ....

Surveillance Aircraft , Human Factors , Arthur Rosenburg , Coalesced Analysis , Sonar Scan ,

CNN CNN Newsroom April 19, 2014 21:17:00

Logbook and listen to the flight sound before it went silent. we have arthur rosenburg and calling from hawaii by skype we have oceanographer greg stone, he s the chief scientist for conservation international. so, michael, perhaps i can start with both of you here. just to get an assessment of this. they are now putting this very tight time frame, five to seven days, otherwise we have to reassess. why this sudden urgency? is it a good sign or is it a bad sign? there are two aspects to this search, subsurface and above surface and they re very different and they should be treated with a different approach. the subsurface i think should be played out to its natural conclusions. we ve seen it happening reassuring reassuringly. we ve seen the ping locator go down there to the limits of the batteries and we ve made the jump to the blue fin. they have to be 100% sure when he goes to bed at night he s ....

Arthur Rosenburg , Greg Stone , Flight Sound , Conservation International , Ping Locator Go ,

CNN CNN Newsroom April 19, 2014 21:51:00

Pro probability of finding some wreckage. that was base on a number of of analyses that gave us our best shot. it was the pings plus data and we had that doppler phase analysis. the satellite pings? correct. we made certain assumptions about the performance of the airplane and brought us to this area. the way i look at it the pings focused us in certain discrete areas. the first area with the first ping, they may find something in the next five so-to-seven days but on the chance they do, you have to have plan b. plan b is fine-tuning the analysis you have and looking in the next site which is the ping that lasted 13 minutes which i understand is a very strong signal. that is their best clue so far. michael, subsurface and surface. on the surface 45 days in, they ....

Satellite Pings , Doppler Phase Analysis , Planb Plan B ,

CNN CNN Special Report April 15, 2014 02:25:00

Especially given the fact that new zealand searchers are trying to identify the debris they may have picked up. we still need that element if we can get it. if we have the subsurface going on and still have the above surface fightings going on if we can get sightings that will pay out to be parts of that airplane that s going to be huge if for no oth reason it will bring everybody back on board to believe we are in the right place with the right ideas and now on the right track. i think that s a very important element. technology expert, brett larson, much of this information came from satellite day tachlt what do you think about the quality of the information now at hand for searchers? you know, i think it s good. but i think given where we are in terms of technology as a ....

New Zealand , Surface Fightings , Brett Larson , Technology Expert , Satellite Day Tachlt ,