Major part of efforts so far because maybe, maybe it speaks to motive. More of the major developments from justice correspondent pamela brown. Reporter tonight, german investigators again search the copilots apartment bringing out more boxes of evidence. They left without saying a word to reporters. We know inside 27yearold Andreas Lubitzs apartment, discovered thursday tore up medical leave notes in his trash can, one for the exact day lubitz deliberately crashed 95 ta 25 into the french alps. We have a letter that indicated that he was declared by a medical doctor unfit to work. Reporter tonight, germanwings said it never received a sick note for lubitz for the day of the flight. It appears lubitz was trying to keep his condition a secret. We have reason to believe that he hid this ill nessness from the company he was working for. Reporter authorities have not said publicly whether lubitzs illness was related to mental helt issues but lubitz was treated for depression and was excused from work by a neuropsychologist for a period of time including the day of the crash. This is Dusseldorf University medical clinic. We know Andreas Lubitz came to be here for treatment in a condition back in february of this year and most recently the trip. The clinic wouldnt say what that condition was but made it clear it wasnt for depression. Those who knew lubitz seen here running a marathon in 2013 tell cnn he didnt lend on anything was wrong. He was for me very healthy guy. I cant imagine that he was mentally ill, depressed, and sad. He doesnt seem like it. So i was shocked when i heard that. Reporter lubitzs medical history and what germanwings and lufthansa knew about it will play an Important Role in the investigation. Every pilot learns during his training and i always say as an aviation doctor, theres anything wrong with you, please contact me. Do not hide physical or psychological illnesses. Pam la joining us from dusseldorf. It seems like theres still a lot we dont know. Reporter absolutely anderson. A lot of Unanswered Questions. Publicly officials are only saying so much. As we say in the report theyre not specifying what this illness is as we know there are reports out there that he was battling a depression but we dont know if there was Something Else if that is true that was the imp tis for that and question about his training back in 2008. Why did he take a few months off from training and then go back and as we know complete it. Was something going on there . Lufthansa will not say why his training was interrupted, but say he was is 00100 fit to fly and no reason to think other wise. Anderson . This solidifies what was until now merely educated guesses. Lets get perspective now from chief medical correspondent sanjay gupta who joins us. The new york times, wall street journal all reported the copilot treated for depression of some time and then this report back in 2009 when he left training that there was a major depressive episode. Could depression alone result in someone doing Something Like this . Theres certainly a huge number of people out there who struggle with depression have struggled with depression and dont end up taking their own life or killing others. It is unlikely that depression alone would lead to this sort of behavior, to answer your question directly anderson. People who have major depressive episodes if they are going to be violent in any way, if theyre going to hurt somebody in any way, its usually hurting themselves and if theres loss of life usually because of suicide, not homicide. Thats what we know from depression alone. If there was a personality disorder that was superimposed on top of this you have to think there was Something Else sort of going on here. So we just dont know and as pamela was just saying what sort of precipitated all this over the days and weeks before this event as well those are very, very important details to try and figure out what may have happened but, you know, caution and ive talked to some folks who do this sort of work. They say, look at the end of the day, there may not be a satisfactory answer. Theres a real desire to say, hey, this is the cause, this is what happened. But it may not be that neat and tidy when all is said and done anderson. Lufthansa said all pilots are examined once a year and this copilot was in their words, 100 flight worthy without any limitations. Obviously, that is not the case. They maybe have believed he was 100 flight worthy. Might have been hiding the information from them but could it have completely gone unnoticed . I think it could have gone unnoticed. Even some of the video recording in the cockpit prior to earlier on it sounded like there were conversations that were pretty par for the course that were taking place. Even within the immediate time period before this happened, it seemed like there werent clues people picked up on. I wonder what the weeks and days before that. How was she sleephe sleeping caring for himself, the nature of his relationships at that time. Those are questions investigators are trying to figure out now but there may have been clues in that time period. But even then its hard to know. How many times have we talked about these sorts of things and the aftermath of some mass homicide and people always say, well were there clues . Perhaps. Maybe not. It just sometimes is very difficult, even when you look back in hindsight. Was there a precipitateing event, a breakup of some sort a major life change that would have sort of plunged him into a deeper depression or made him suicidal but again, making that leap between suicidal and homicidal, particularly mass murder at this scale, this is a huge leap indeed. Sanjay appreciate the update. Thanks. Thank you. Once again tonight, a lot to talk about. Try to make sense of. Safety analysis and former faa. Author of flight 370 y it disappeared and why its a matter of time before this happens again, david soucie Richard Quest, justin greene. Richard, this reporting that the copilot hid his medical condition and we dont know the details on what it is from his employer it still does not indicate motive. No. It doesnt. If youre looking for a cast iron motive looking the put to a jury not that you would, but you can say open and shut case. No it doesnt. We dont know what the medical situation was. We can extrapolate. We can speculate. The notes were ripped up. He was meant to be flying on that very day. Had a note saying he was unfit to fly. It doesnt go to motive but it does give us a very good idea of the state of mind that this person was in who was knowingly going into a highly stressed job where hed been told he was unfit to fly. Its unclear what the medical condition was. There are so many rumors. Concerning whether its physical. Whether its mental. If it was a psychological condition. How serious or severe. In what way . We dont know but yes, we will find out. David, lufthansa policy requires employees to disclose if they have a condition to affect their ability to fly but there is a real incentive for pilots to hide it. I mean essentially, if you are grounded for a year because of depression or because of medicine youre taking because of depression that can destroy a pilots career. Thats the rub. Theres another thing that can take their career down. Thats making a severe error in their flight pattern and reporting it on their voluntary reporting, putting it in front of a board and they have to decide are we going to ruin this guys career permanently . Thats a record and its on his record. So theres a lot of things the pilot faces in this realm. If you have this record it goes directly in the face of safety. It has to be open and voluntary information. Theres so much stigma in this country around the world not only for any kind of illness but Mental Illness in particular. We dont know if thats what this copilot had, a Mental Health issue but its understandable. I mean its a difficult situation. Its understandable of employees, hide all the time if they are suffering from depression. Dont want their employer knowing that kind of detail. Pilots have this incredible responsibility. The lives of so many passengers in their hands. Pilots are athletes in a way. Physical well being and mental well being directly connected to their job. A lot are practicing but pilot is not a one. If they if it comes out that they have that condition. To get back once youve been off for a year to get back in the cockpit, to convince your employer and also your fellow colleagues i imagine. Thats an uphill battle. I had a whole, a lot of friends whose practice is devoted to representing pilots who have their tickets, their licenses pulled and are fighting to get back in the cockpit. Its a major hurdle to get back in the cockpit, if you have a medical issue that has pulled you out. We cant really fully understand the magnitude because most of us are not in jobs that frankly, if we did have a medical condition, a physical condition or a mental psychological condition that would be absolutely devastating to the future of our careers, that would grind it to a halt. Ive had cases where ive known of somebody who has been diagnosed with something and the doctor said you stop flying now. Today. If you dont, i will report you. And your entire career comes to an end or potentially comes to an end. How well do pilots know each other . Does word get around that this person is struggling with an issue, this person has an issue . Is it a Small Community in that way . Its a Small Community to complicate that or make worse, you might fly with your pilot for a month and then come in with someone else. Probably not even that often. Might be a day or two. So each time you do that, spend five or sx hourix hours in a close area. Theres a lot of dialogue because theres waiting with the auto pilot on and that person goes to the next one and to the next one. In some respects its less than you might assume. In other respects, its more communication line. Just in the liability issue, we know obviously lufthansa is giving some money to families which is common in this kind of a situation, help families through this emergency period. But in terms of liability, theres really two distinct kind of regions. Either an airline is found at fault or not at fault. If the airline is not at fault, whats the liability . If its not at fault, the airline has a limited liability to passengers. They have to offer them about 160,000. This is under international conventions. Yes. Provable damages. If they have 3 million worth of damages based on earnings nay get 160,000. If theyre at fault and a strong case against lufthansa if one employees was hiding something, its unlimited damages, potentially based on the what kind of career the person had . Its unlimited provable damages urn thender the law but lufthansa has to prove it was without fault. Not the plaintiffs dont go into court and say youre negative did this wrong and that wrong. Thats right. Justin thank you very much for being with us. David soucie as well, Richard Quest. A lot more to talk about. Coming up next an up close look at just how daunting conditions are at the crash site high in the french alps and later, an idea getting more traction putting cameras in the cockpit. Look at the vantages and why some pilots are fighting tooth and nail against that. Fact. When you take advil you get relief right at the site of pain. Wherever it is. Advil stops pain right where it starts. Relief doesnt get any better than this. Advil. Theres nothing more romantic than a spontaneous moment. So why pause to take a pill . And why stop what youre doing to find a bathroom . With cialis for daily use, you dont have to plan around either. Its the only daily tablet approved to treat erectile dysfunction so you can be Ready Anytime the moment is right. Plus cialis treats the frustrating urinary symptoms of bph, like needing to go frequently, day or night. Tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. 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Which is why usaa is honored to help our members with everything from investing for retirement to saving for college. Our commitment to current and former military members and their families is without equal. Start investing with as little as fifty dollars. Copilots mental state, we want to focus on the mental anguish he caused. Sessions to start tomorrow. In the meantime more families arrive today at the crash site. Nic robertson is there. He joins us now. Whats the latest . Reporter well in all of this its hard to say good information, anderson but at least its a help for the families. We understand from the recovery teams now that theyve identified 16 of the victims as being done in dna labs. The lights you see behind me Police Headquarters theyre working through the night here. Behind that the recovery teams are processing the bodies as they bring them up. We also understand theyre bringing in biometric equipment as well to help in the process of identifying the bodies. This will include fingerprinting equipment and we also understand when the families come here the french authorities as we know given the opportunity to go as close as they can to the crash site but theyre also taking dna samples from the families as well. And again, all of this to sort of speed the process by which they can make these very difficult identifications, anderson. Horrific process. Clearly seems communication is much better with family members than we have seen in prior mysterious plane crashes. Updates as the news comes in . Reporter the families have been given a lot of space. You have lufthansa bringing them into the country and the french authorities sort of picking them up and helping them after that. What we have seen this i think, was exemplified when we saw soon after this crash, german chancellor Angela Merkel french president francois and coming here as well they came together. It was a message of how well they Work Together and that seems to be the case continuing now. The german lufthansa, the french authorities getting people and the briefings do seem to be happening. So theres a lot behind the scenes that we dont get the details on anderson. Nic robertson reporting from staging ground. Nic, thanks. More now on how challenging it is to be in those mountains in these hard conditions. Karl penhaul found out firsthand today. Reporter swinging on the wire they recover the remains. Hundreds of feet below, emergency crews clean to the mountainside. Just so they dont fall. Investigators say the speed of the crash pulverized plane and passengers. The recovery operation they say is bit by bit, bag by bag. You can just pick out the small red flags, rescuers dig into the earth when they discover new fragments. And that looks like a scorch mark. The french prosecutors said the plane hit the mountain bounced off and then disintegrated. Its a tough hike through steep valleys. A while before dawn but were going to a trail here. In order to understand why some rescuers describe this as their biggest ever challenge, we try to get closer to the crash zone. Theres a little bit of frost this morning and now the sun coming down. Certainly no sign of snow just yet. [ speaking Foreign Language ] translator few people except shepherds live here. Reporter trees and grass. You can see why they have to fly anything out. The crash site by helicopter. The row for bladetor blade helps pinpoint. We see teams work with expert mount mown mountaineers. Saying farewell is never easy but perhaps those grieving could find a little consolation amid these crags. Piece of the running water. Piece of snow capped peaks. Peace to loved ones lost. Karl penhaul, cnn, the french alps. Just ahead, what it took to take 9525 down. Young kyung lah takes us down a flight simulator, what its like during the final minutes. You cant predict the market. But at t. Rowe price weve helped guide our clients through good times and bad. Our experienced investment professionals are one reason over 85 of our mutual funds beat their 10year lipper averages. So in a variety of markets we can help you feel confident. Request a prospectus or summary prospectus with Investment Information risks, fees and expenses to read and consider carefully before investing. Call us or your advisor. T. Rowe price. Invest with confidence. The promise of the cloud is that every organization has unlimited access to information, no matter where they are. The microsoft cloud gives our team the power to instantly deliver critical information to people, whenever they need it. Here at accuweather we get up to 10 billion Data Requests every day. The cloud allows us to scale up so we can handle that volume. We can help keep people safe and to us that feels really good. I have a cold with terrible chest congestion. I better take something. Theraflu severe cold doesnt treat chest congestion. Really . New alkaseltzer plus day powder rushes relief to your worst cold symptoms plus chest congestion. [breath of relief] oh, what a relief it is. Whether you need a warm up before the big race. Or a healthy start before the big meeting theres a choice hotel thats waiting for you. This spring, choose choice twice, get a night at no price at 1,500 hotels. Book now at choicehotels. Com Authorities Say the copilot did crash on purpose kilg everyone on board. Defies comp hence, especially among other pilots. Goes against every instinct in their dna. What it took to take this plane down directing the airbus a320 to descend as low as it can go and what it looks like with the alarms triggered. Young yng kyung lah shows us firsthand. Lock the physical door. It will totally lock out that door. Reporter so begins what is the likely descent and the a320 simulator simulator. Just dialled in. Got the airplane going down. Reporter the motion of hitting 100 in this situation is unthinkable for you . Absolutely. Why would i do that . It goes against every grain in my body. Theres no reason why i would do that. Reporter you know the consequences of that action. Absolutely. Reporter if you had to step in this young mans mind do you think he understood . Its a very difficult subject for a pilot because we are, again, here to keep our passengers safe. To keep the airplane safe to keep our crews safe so to go where this young man went is hard for me to go there. By saying im fit to fly that means im good to go. Im ready to take on this airplane. Reporter and all the lives in the back. Thats right. Reporter approximately 9 minutes later up. So now we would pull up and react. Pull up. Pull up. Pull up. S. This the worst situation ive been in. Reporter what happens to your hands after that crash . Theyre sweaty. You can see it. In all the years ive been flying a simulator, never seen an airplane hit the ground. We recover the airplane before that happens. Reporter so that was unthinkable. For you. Yeah. Hard to see. Reporter roger takes us through a manual scenario explaining the germanwings pilot likely did not do this based on the control descent. Pull up. Reporter its uncomfortable. Pull up. Lets just come out of this. Get out of this. Pull up. No need to take it. Reporter even in the simulator in a scenario weve asked him to do for the purposes of this story, this pilot cannot stand it. Does it exceed pilot instinct . Is it human instinct to pull up the stick at that point . Yes, im thinking about the safety of my passengers my crew and the plane. Thats what i do as a pilot. Reporter is that why this incident has so disturbed the people in your profession . Its unthinkable that a pilot would take an airplane and drive it into the ground. Its not something we would ever think about. Reporter kyung lah, cnn, las vegas. Joining me again, cnn aviation correspondent Richard Quest and with us ron stock and airbus a320 captain. Ron, its interesting to see that pilot in the simulator couldnt even bring himself that close to simulate crashing an aircraft. Just against every instinct pilots have. Even in the simulator, i can assure you there isnt a pilot out there that wants to allow that to happen. Allow the airplane to hit the ground. We practice those maneuvers. It is called controlled flight into terrain. We practice that maneuver in the airplane purposely so that if we do get a warning like that, terrain, terrain, pull up, we know what to do immediately. And nobody even though we know this is a simulator, we dont allow that to happen. Richard, you and i were watching that. You had the same situation in simulators. The instructor will not even countenance the idea. They dont even want to think about it. Dont want to try it. Not only that, there have been times in the simulator i got into trouble and the instructor wont just switch it back. Hell take the controls and theyll fly it out. Its a mental blockage. They dare not go to the idea that this isnt real. Ron, its interesting. Is it possible once the flight data recorder is found, i mean if this copilot in the last seconds attempted to pull the plane back to pull the plane up would that record in the flight data recorder . Absolutely. That should record control surface, control input. Control surface movement. Numerous parameters. Yes, i would say that that would be, that data would be there. And, you know, again, theres a lot we dont know about this copilot exactly what the illness he was facing is that he was trying to hide. If a pilot is intent on hiding something, on hiding thoughts theyre having or hiding an illness, if they dont selfdisclose, if theyre not getting treatment, if they dont want their employer the know theres no guarantee that i suppose Something Like this couldnt happen again. Theres no structure in place, at least in lufthansa that unless they selfreport, that its going to be discovered. I think this situation is so remote. I have known numerous pilots over 30 plus years that have relinquished their medical certificate for medical reasons. We take our medical certificate or medical license very very seriously. Every time we fill out the form 8500 the faa form to get a medical, you have to selfdisclose 20 some items on there. Mental as well as physical. And actually in the bottom of the form it states that if you dont supply this document you can be imprisoned for up to i believe, its five years and fined 250,000. You have to report if you go visit a doctor for any reason on that form. I didnt realize that. Thats incredible. Ron stok thank you very much. Richard quest as well. Just ahead, the deliberate crash of 9525 reignited the debate over cameras in cockpits. Why arent they required and what difference might they make to safety even if they dont stop the crash, they wouldnt have been able to stop the crash on 9525 but would they make a difference for the investigation afterwards . Details ahead. At mfs, we believe in the power of active management. Every day, our teams collaborate around the world to actively uncover, discuss and debate investment opportunities. Which leads to better decisions for our clients. Its a uniquely collaborative approach you wont find anywhere else. Put our global active management expertise to work for you. Mfs. There is no expertise without collaboration. You could sit at your computer and read all about zeroturn mowers. Click. Scroll. Tweet. Or you could just sit on a john deere z435 eztrak and feel its power. Youll know itll get the job done fast. When its time to pick a mower youve got to get on one. Visit your local john deere dealer for a test drive today. Sign up to take your turn on a z435 and save 100 dollars on your purchase. Nothing runs like a deere. If crash of flight 9525 that french Authorities Say was deliberate is prompting changes in airline policy. Frts first time, europes Aviation Agency recommending two people always be in the cockpit during flight and some European Airlines including lufthansa already begun implementing that guide. The crash reignited debate over Something Else many believe should be in airline cockpits at all times. Were talking about cameras. Randi kaye has that angle. Reporter a 3,000 foot tumble from the sky. Thats what happened to the zesz nah plane carrying 9 people. Its very obvious the aircraft path was near vertical. Reporter why this plane dropped straight down killing everyone on board back in 1997 baffled the ntsb. No black boxes were recovered to call for Cockpit Video cameras. California based Physics Corporation delivered dozens of cameras though none to major airlines. They have the camera facing to the door behind the pilots. You can have a camera behind the pilots. Depending on the type of lens chosen for the camera. You could have wide field of view or narrow field of view. Reporter theyre designed on the instruments, the pilots hands or even their feet. Not necessarily on the pilots faces. They can record up to 32 hours and the company said they can survive a crash. Withstanding heat. It will stand at 5,000 pound static crush load. Reporter like black boxes, has a beacon that lasts up to 90 days allowing time to locate them. You can actually see when people took actions and what they took what the settings were you can read that through the flight data recorder to some degree. Reporter but still, not everyone sold. Im very much against it. I just feel like we have pretty much the situation covered between a cockpit voice recorder which records every sound of any kind. Reporter concerned pilots argue its an invasion of privacy, suggesting conversation about a supervisor or an argument with a spouse could end up on youtube. Still, the ntsb argues cockpit cameras could show investigators what happened in those critical moments before a crash. Did a pilot have a heart attack . Was there smoke in the cockpit . Or did a dangerous passenger manage to get inside . The Airline Pilots association rejects the idea of cameras, which could cost up to 100,000 each. The group told us resources should be focused on enhancing current systems, as opposed to video images which are subject to misinterpretation and may lead investigators away from accurate conclusions. Randi kaye cnn, new york. Joining me now, aviation attorney and former military pilot justin green and cnn aviation analyst and pilot miles obrien. I think most nonpilots when they hear about the idea of putting cameras in cockpits say, well, look thats a no brainer. Whether its data thats stored in a third kind of black box or whether its streamed to ground control, it just seems like a sensible idea now. It is a sensible idea. And i think a lot of the kind of reluctance of pilots to embrace the idea is based on a mistrust of how the information will be used. Distrust of management. Distrust of management prying on their privacy. Those sorts of things. Pilots are as invested in safety as anybody perhaps more so because their lives are on the line as well as the passengers. So i think there is a real mistrust and thats the basis of the pushback. Miles, i mean theres obviously the cost associated with this kind of thing. The video footage could lead investigators away from accurate conclusions. To me that seems counterintuitive. If you have the technology to stream video and whether its watching in realtime or just record it somewhere on the ground if you have a crash, thats one piece of data that you can immediately go to before you even find the voice data recorder and you find the other data recorder. This is all in the realm of common sense. Of course its better. Of course it is. Theres no need to debate this. Its not really a matter of cost. Its an inconsequential cost in the grand scheme of things and when they were talking about putting the voice recorders in cockpits it was the same argument. This wont do us any good, of course it does good and it will do good. The idea that somehow these video pilots meeting their demise will end up on television is a complete red herring because we dont even listen to the recordings. We see the transcripts. So i think pilots are making a mistake here but i understand why. There is this idea of mistrust and has got to go away. The Airline Management and pilots have been at odds for years. Management getting givebacks, work rules, taking away pensions on it goes. There is this huge climate, adversarial climate which is absolutely runs against safety in every shape and form. It does seem like there would be ways to address some of the pilot concerns with having video out there. Just as miles was saying access to this voice recorder is limited. You were saying when we were off air that in a lawsuit against an airline, you have to go through court for attorneys to even get access to it. You would think there would be ways to address the concerns of pilots and still have video streaming. I think the experience theyve had with the cockpit voice record erer. It will make pilots live easier with videotaping and as i said. Off the air pilots are taped from the moment they drive up to the parking lot through the terminal and i think theyre used to being on Video Surveillance all of us are than we used to be. Obviously improvements are made on airplanes often after a crash. Do you see 9525 as the catalyst to get cameras finally in the cockpits . Do you think this is the turning point . I dont know the camera would have changed the events. Sure. Unfortunately. But put it into the context of putting the cockpit in the cloud, if you will. The camera having the cake ability of streaming data to a satellite when something goes awry in a plane and then turning it around. Having twoway capability of communication. Why shouldnt someone on the ground when they realize theres trouble like this be able to open the door for a pilot whos locked out . The only reason the airlines wont do it, i know na issa looks at early studies for single pilot operations. You would need this kind of connection to the ground to make single pilot operations work. The airlines do that because it saves them money. Good to have you on. Justin green as well. The voice data recorder offered crucial clues on the crash. This is where investigators heard the pilot banging on the cockpit door. Investigators are still trying to find the flight data recorders. We said in hope it will answer more questions, but keep in mind sometimes socalled black boxes dont actually help. Well have that story coming up. Denver international is one of the busiest airports in the country. We operate just like a city and that takes a lot of energy. We use natural gas throughout the airport for heating the entire terminal generating electricity onsite and fueling hundreds of vehicles. Were very focused on reducing our environmental impact. And natural gas is a big part of that commitment. Progressive insurance here and im a box who thrives on the unexpected. Haha shall we dine . [ chuckle ] you wouldnt expect an Insurance Company to show you their rates and their competitors rates but thats precisely what we do. Going up nope, coming down. And if you switch to progressive today you could save an average of over 500 bucks. 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Whether you need a warm up before the big race. Or a healthy start before the big meeting theres a choice hotel thats waiting for you. This spring, choose choice twice, get a night at no price at 1,500 hotels. Book now at choicehotels. Com germanwings 9525 the hunt is on for that second black box. The flight data recorder. Now it could hold critical clues about what exactly the copilot was doing for those final moments before the plane crashed or it may not. Sometimes the recorders dont provide all the answer. Families and investigators, everyone are left to wonder exactly what happened. Once again, heres randi kaye. Reporter this is the sound of a pilot in trouble. Swissair oneeleven. Reporter that was the pilot of swissair 111, talking to air Traffic Control minutes before he crashed into the Atlantic Ocean in 1998. Everyone on board was killed. When crash investigators found the planes black boxes at the bottom of the ocean, they were stunned. Both the recorders stopped recording about six minutes before the aircraft actually hit the water. Reporter leaving investigators to wonder why they suddenly lost control of the plane. It was a fire they later found in the jets Entertainment System which also caused the black boxes to fail. But it took putting the plane back together all 2 million pieces of it to figure that out. Bottom line the socalled black boxes arent perfect. And theyre not black either. Theyre usually orange. On an airplane, theyre tucked inside an insulated case and surrounded by stainless steel. Built to withstand temperatures high as 2,000 degrees fahrenheit and catastrophic impact. When went down in 1996 just 12 minutes after takeoff from new yorks jfk airport, the planes black boxes were recovered, but they offered little. Both the voice recorder and the data recorder terminated their operation within a nanosecond of each other. When the explosion took place. Reporter regardless they figured out a fuel crash caused it. On 9 11 64 people died on board American Airlines flight 77 when it slammed into the pentagon. Fire crews spent days trying to put out the flames. The two black boxes were found in the wreckage but the cockpit voice recorder was too charred to offer anything of value. It flew in with such force and the fire was so intense that nothing could have survived that impact. Reporter but the cockpit voice recorder on board germanwings 9525 is already yielding clues that the copilot intentionally brought the plane down. The hope is now the second black box, the flight data recorder will be recovered. So investigators can learn even more about this doomed flight. Randi kaye, cnn, new york. Up next we take a look at the other aviation mystery. Where is Malaysia Flight 370 . The search is on still no sign of the plane or the 239 people who were on board. Our safety analyst david soucie warns this could happen again but crucial changes are already in place due to that disappearance. Insight into the mystery coming up. But at t. Rowe price weve helped guide our clients through good times and bad. Our experienced investment professionals are one reason over 85 of our mutual funds beat their 10year lipper averages. So in a variety of markets we can help you feel confident. Request a prospectus or summary prospectus with Investment Information risks, fees and expenses to read and consider carefully before investing. Call us or your advisor. T. Rowe price. Invest with confidence. People ship all kinds of things. But what if that thing is a few hundred thousand doses of flu vaccine. That need to be kept at 41 degrees. While being shipped to a country where its 90 degrees. In the shade. Sound hard . Yeah. Does that mean people in laos shouldnt get their vaccine . We didnt think so. From figuring it out to getting it done, were here to help. 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Call Liberty Mutual for a free quote today at see Car Insurance in a whole new light. Liberty mutual insurance. Some perspective now. Even as were getting a flood of potential answers in this latest tragedy, theres still so many Unanswered Questions in the disappearance of Malaysia Flight 370. No sign of the boeing 77 and the people on board. Imagine what its like for those faeps. Despite an extensive search in the south indian ocean, no sign. The analyst, david soucie joins us. Malaysia flight 370 why it appeared and why its a matter of time before it happens again. You answered a lot of the information and went back through it all, all the data. At this point, do you have a theory about what happened to the plane . I do have a theory but its just what i would call the most prominent theory. Theres several theories. What i did is used an algorithm ive used for years in aircraft investigations. In that theorem, what we do is take all the validated assumptions, which seem contradictory, but validate and put them against to see which are true which are most true and which arent. We had 125 facts as validated assumptions. Typically, we have 2,000 or 3,000 in an accident. Interesting. While it was conclusive in my mind the delta teen inflight fire or mechanical failure and someone taking over in the cockpit or abducting the aircraft and overtaking the pilot, the delta between those two was not significant enough for me to say conclusively this is what happened. But nonetheless, one of them came out ahead of the other. So many people had different theories. You go through all the predominant ones and the ones theres a likelihood of. Right. And theyre ultimately the reader the canread er can go to the web site and use the data to make their own assumption about things. Its something a working tool moving forward in the search and rescue and once we find it i think we will find at least some debris frit. You do think something will turn up . I certainly do. I certainly do. Think of it this way. One of two choices. An entire aircraft sitting somewhere. On land it will be found eventually. On the other hand if it broke to as many pieces we look at this accident this week and all those pieces, theyre in the water somewhere. Have lesson been learned . This is the most important thing to me. For the first time the Airline Industry and now even asa is taking actions on their own to improve things without waiting for the accident investigation report. In a way, the fact that the airplane craft hasnt been found is motivating action in a speedy action. Congratulations on the new book. David soucie thanks. Thanks anderson. Authorities investigating germanwings 9525. One undeniable if crash fact. Soon hope investigation. So much more to work with than mh 370. Still a mystery. Up next, much more on what happened a year ago and whats been happening since. The cnn special report vanished of flight 370 starts now. A routine flight begins. A safe aircraft. A trained crew. And then there are reports of a passenger plane crashing in the french alps. The plane descending 27,000 feet in nearly 8 minutes. The aircraft obliterated. No piece larger than a small car. No sign of life. A tragedy that