until there is conclusive evidence that this plane went down, and they will not believe it. and so, yes, frustration, anger, and often just sad innocenness hotel here in beijing where the people have been stuck for more than two weeks, jim. >> and it is truly heartbreaking to imagine that. we know that china, and the bulk of the passengers on board were chinese and devoting an enormous amount of resources now, and you say that you have new details of what china is sending there, and they have nine ships helping with the search, but what other assets are they deploying? >> well, it is a huge asset deployment by china and very rare in that part of the world and to have the ships as you say, and enormous transport plane landing in perth to give assistance and they have sent an icebreaker, the "snow queen" into the area erea that has a

skeleton crew, and they have rapidly deployed it, but given the distances, it could take up to three days to reach it where that satellite image was taken and also worth remembering that we have been talking about, this image was taken several days ago, a nd other factors like th sea condition, those objects might have moved on and sank, and so really, it seems like, you know, it is always one step behind the curve in the search, but certainly china is showing with its increased might in this region that it wants to do everything that it can to help the intelligence gathering and just the asset deployment to try to find this plane, because as you say, that the consequences for china are, in a way, the worst, because of all of the 153 passengers on board from here. jim? >> well, you make a great point, david, mckenzie, and this is a rare deployment half a world away, an unusual for the chinese navy to be operating so far, but

they of course, have a lot of interest with the population of chinese nationals there on the flight. thank you, david ma ken -- david mckenzie. so now, i am joined by steve wallace, aviation analyst, and former faa investigator who has been involved in investigations in the past, and so now we have a new satellite released from the chinese, and as you look at that, how much of a lead, and how much of a step forward in the hunt for this plane do you see in that somewhat grainy black-and-white satellite photo? >> well, jim, that is a powerful discussion that you had with david mckenzie, and when people, of course, are in the dire circumstances clinging from the last hope, we don't want to take that away from them, so as far as this floating debris, i would just say that i'm just slightly

less skeptical that it could be the airplane as compared to the first chinese satellite photograph that we saw earlier in the investigation for two reasons. one is that it, if it were at a point where the fuel was exhausted the wing would be more buoyant and under a auto pilot control or pilot control to make a fairly stabilize impact with the water, perhaps it is more likely that this piece is part of the airplane than that first image, but i'm still fairly skeptical that it is part of the airplane. >> fair point. we have heard it from others, and you are not alone in the skepticism. i wonder, you know, that you will hear it from a lot of people that the governments involved in the search know more and i will get this question all of the time, that they are hiding some sort of information or better satellite photos or radar data, and my response always is, listen, they are doing their best or they would not deploy so many assets out

there at great expense if they were not operating under the best information they have, but as you look at this, there are a lot of tepgss tension s in this about sharing capabilities and so on, and are you concerned that the areas are not sharing information and clues that they have? >> yes, i'm very much concerned. i would link that to the my concern that we seem to have abandoned the northern arc. i mean, this inmarsaturday dat the most reliable, but that we have shifted away from the most northern most basis of countries that don't particularly have good relationships among them, many of them, and would be i assume reluctant to expose any weakness in the radar systems, so when these countries say it did not come over our country, we would have seen it. so i am concerned here that we have suddenly moved some things

off of the table, and the northern arc in particular that perhaps it is premature to do that. >> fair point. as you say, the tensions between the u.s. and china and the china and the southeast asian countries and malaysia and other countries as well. and jim, i want to ask you about a question that came up in twitter and it is a frequent one that comes up with the disugss with experts. why does it take three or four days to read the satellite photo? and the same was true for the australian photo and the same with the chinese photo of being three or four days old? why the delay? >> well, this is not squarely in my expertise, but it is a massive amount of data coming down, and it has to be sifted through. i think that, you know, for me, i think that some of the more interesting points, and i mean, we are trying to solve the accident, but i am thinking of the going forward lessons here. how difficult would it be to simply have a capability that

the position and altitude of the aircraft is continuously reported, and it cannot be, that capability cannot be disabled. >> and that is, i'm glad you brought up that topic, because it is another question that i am getting frequently over twitter which is what can airlines do to prevent a giant airliner from disappearing under such mysterious circumstances. keep the data stream flowing and what measures could they take to keep it from happening down the line. this is a question that came from ziyadmatti. >> well, the capability is that you have utilized it already on the airplane and to make a modification to it so it cannot be disabled and this airplane was capable with acars and data link and of course, it knows the

position to absolute certainty level of precision. so you could modify the onboard systems on the airplane currently so it could not be disabled. i mean, a backpack er can go bu a satellite system for $150 and of course, as i think that richard quest may have described earlier, getting anything on an airplane approved is extremely costly, and they focus very much on the noninterference with other systems or that it cannot pose a risk to the airplane, and certainly, i think that you could have new technology or utilize the existing technology to solve that problem. >> well, is ate good poiit is a because it is not complicated information, and the location, and that is not complicated technology, but the other is data like speed and direction and that kind of thing. so it seems as you say very much within reach. >> right. i think that ultimate ly,

telemetry of all of the flight data is where we will end up. it is just that it is costly. there are bandwidth issues, but we have had telemetry on the space shuttle that has been flying since 1981. so the technology is there. i have to say that rulemaking in the area of flight data recorders is always difficult, because there are simply federal requirements that you do show a positive cost benefit, and we have virtually never had an unsolved accident involving a transport airplane, and this could be the first one. >> sobering prospect. thank you steve wallace, and he is a former faa investigator right here in the u.s. and now a navy plane is looking for any sign of the missing jet. you will hear inside of the crews taking part of the global hunt.

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and we learn about the new brutal challenges of the global hunt. >> reporter: the american crew of this p-3 orion is facing another grueling day searching the indian ocean for malaysian flight m-370. and erica roth has to be motivated to continue. >> and we have cleared that part of the ocean, and we know it is not there, and we can focus our efforts on somewhere else. >> reporter: this plane is their home for up to 12 hours a day, and the living conditions are less than luxurious. so the first thing that you notice on the plane is how hot it is. it is 95 degrees fahrenheit, and 35 or so celsius. and the ac comes on when the doors close, and soon the p3 is ready or the takeoff. the malaysian coastline disappears in minutes, and the ten-hour flight will take us south of kuala lumpur over the

indian ocean, and we will cover 25,000 square gnat cal miles. it sounds like a lot, but put it in context of the size of the search area. >> well, honestly on the scale, it is a small percentage, but that is what we can do. >> reporter: and getting to the search area is going to take 3 1/2 long hours, and the 11-member crew takes turns sleeping in cramped quarters or on the floor so everyone is ready to tackle the tedious task ahe ahead. we have shut down one of the engines to conserve fuel and then descend to 300 feet or 91 meters above the water, and the search begins. some look out the windows, and others watch the radar, and it is sensitive enough to pick up dolphins, schools of fish or anything that emits heat. >> sometimes you see the debris and you want to think it is significant and we come down the look at it, and you say, oh, that is trash, but you'd like it to be something else. >> reporter: and looking out the

win doe, and this is what you will see. one of the things that you will notice as you do it for a while, you look out the window, and your mind starts to play tricks on you, and so you think that you will see debris, but it is a white cap on a wave, and hone honestly, it is pretty disappointing, because there is that part of the mind that hopes that you will find something, and you look out there, and it is nothing. low clouds cast a gray shadow on the endless ocean, and you can't help but think about the plane and those 239 people. they are out there, somewhere, just not here. >> it is about getting those people back and still maintaining hope. >> reporter: that hope and passion for the people on flight 370 is what drives flight engineer petty officer brandon bronak and even as the sun fades away, and it is time to go home again empty-handed. >> well, it is pretty stressful. we were all hoping that we would find something.

>> reporter: another long grueling search is over for today. a new mission begins tomorrow. will riply, cnn, over the indian ocean. it is a difficult thought s especially for families, but the missing plane might be found deep on the ocean floor. next, i will show you some deep sea technology that could be key to finding it. that's a man interviewino.for a job. not that one. that one. the one who seems like he's already got the job 'cause he studied all the right courses from the get-go.

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the global hunt for malaysia airlines flight 370 could come down to one very small sound, the ping from the flight data recorder. the ping may start to fade away about 14 days from now so crews are frantically racing to find it before it's too late. here's what that ping sounds like. so quiet, so simple, surprisingly simple. correspondent rosa flores joins me to explain the frantic hunt for that sound, which as we've said before, doesn't really sound the way we thought it would sound. >> i know, i talked to a company that uses equipment that specifically listens for this. they told me something called a tpl, a tode pinger locater, and it does exactly what the name suggests, it looks for that ping. it's a piece of equipment that has listening gear. and so you put experts on the other end of that information and they're able to distinguish what this ping exactly sounds

like. and they narrow an area which is what we've been talking about all along. this area needs to be narrowed. and within that narrow area, then you'd have a debris field. and that's when you bring something called nauv. autonomous unmanned vehicle. here is what this vehicle looks like and what it does. unmanned probes like this have searched the ocean for plane wreckage before. it took years of sweeping the ocean bottom, but it found a downed plane carrying italian fashion designer vittorio misoni, his wife and four others off the coast of venezuela last year. it helped find an air france flight after it went missing, locating wreckage and hundreds of bodies on board. it found ships that sunk decades ago. these probes allowed for

detailed imaging of the "titanic." >> the smaller ones go down to 5,000 feet. the next classes are much more expensive, larger device, 15 by 25 feet, very large. it adds a lot of batty capability, a lot of hydraulics capability. >> reporter: the autonomous underwater vehicles, auvs, can go as deep as 20,000 feet, sending acoustic pulses to the sea floor to find debris. then maps are drawn to guide search teams. then even find things up to 300 feet under the sea floor. the search zone needs to be narrowed down first. this auv can only search eight square miles a day. it would take four days to search an area as big as manhattan. the equipment works around obstacles so it doesn't get damaged. and maps them so divers don't get hurt. >> underwater obstructions are always a concern. we tend to fly the auv at about a 45-meter altitude above the

bottom. keeps us usually out of the way of any obstructions. >> reporter: these types of searches can take months or years. but the payoff is high. wreckage that gives clues about what happened, data recorders, and the thing that matters most, the fate of the people on board. so once you find that debris field, then you step it up with something called an rov. a remote operating vehicle. what those are, these are underwater robots that use high-definition cameras and robotic arms or claws to retrieve critical pieces of information and critical pieces of this wreckage, in this case, those data recorders. >> and at this point they've got to get a lot closer to the general area where that plane is even before i imagine these come into play. >> absolutely. and because these robots have high definition cameras, they'd be able to see if there is wreckage, that's a huge clue. investigators are going to be looking very closely.

the disappearance of malaysia airlines flight 370 is one of the biggest aviation systems of our time. we'll show you how the world has been can't captivated by headlines offering new flews and new theories. don. someone set up a bogus hotspot, stole her identity and opened some credit cards in her name. but she's not worried. checking her credit report and score at experian.com allowed her to better address the issue... ...and move right in. experian. live credit confident.™

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no large passenger plane has ever disappeared without a trace in the modern digital age. we've always known within a short time what likely happened and where, even if it took time to find the plane. flight 370, however, is in a category all its own. here's cnn's nick valencia. >> this story has captured the attention of millions worldwide. it interest isn't just high gear in the united states but countries like france and china that had passengers on the still-missing plane. from the human drama -- >> on our broadcast tonight, is

it the plane? >> reporter: to the incredible mystery. >> there's a frightening new conspiracy theory emerging about the plane that vanished into thin air. >> reporter: to the intense speculation that has fueled theory after theory. the story of missing malaysian airlines flight 370 which vanished more than two weeks ago has led to nonstop coverage in the media worldwide. cnn's senior media correspondent brian stetter says the event is unprecedented and unlike any plane story the world has ever seen. >> this story is one of a kind because it gets bigger every day. by virtue of the fact that the plane still hasn't been found. it becomes a bigger mystery as it goes. >> the mysteries behind that disappearance are so mind-boggling that no matter what your nationality, everybody's interested in what happened to that plane. >> reporter: with four missing french passengers on board mh 370, the sorry has been front-page news in france.

since french anchor thomas misrochi, the it undoubtedly fueled by parallels to the air france flight 447 that crashed on its way to of off the coast of brazil five years ago. although debris was spotted early on it took almost two years to recover the voice and flight data recorders. >> obviously for any news organization it's a big problem to talk about a story with so little information. >> we'll begin on the latest for the search -- >> reporter: 153 chinese nationals on board, the lack of information has been especially difficult for cnn china affiliate cctv. >> the chinese media has been intensely focused on this story and especially on the feelings and on the struggle of the family members. >> reporter: there's been no shortage of criticism by media critics for the worldwide coverage. while some have called it a sideshow for a boost in ratings, others say the overcoverage is too much with too few facts.

>> i'm jim chute toe in new york. our live coverage of the mystery of flight 370 continues right now with don lemon. good evening, everyone, i'm don lemon, it is the top of the hour, thank you so much for joining us. this is a cnn special report on the urgent hunt for flight 370. right now the sun is rising over the southern indian ocean. that means as we come to you live tonight the search for missing flight 370 is resuming. search crews are back in the skies now heading to this remote part of the world with several new clues. one of them is this, an object floating in the area in the search area captured by chinese satellite. it appears to be fairly large. 74 feet long, 43 feet wide. why is this so important? well, this new object was spotted just 75 miles from possible debris that appeared