Good evening, everyone. Im kate baldwin in for erin burnett. Breaking news. An important new clue for investigators searching for mh370. A second identifying number has been found on the piece of debris discovered in the indian ocean. Sources tell cnn this number is also consistent with a boeing 777. This as malaysian officials are increasingly confident tonight the debris say piece of the missing plane. One malaysian official saying today that it most certainly belongs to a boeing 777. We know mh370 is the only boeing 777 unaccounted for in the world. Right now, this piece of debris a planes flaperon is expected to arrive in france shortly for analysis. We will begin our coverage with rene marsh. You broke this story. A second identifying number on this flaperon it seems very little doubt now that this is in fact mh370. Reporter thats right. We are waiting for the official confirmation. A source is telling me in photos boeing engineers spotted a number 11 digits long. Its consistent with a boeing 777. Yesterday, we showed you this image published in a newspaper showing a code number that matches up with a component number in an internal boeing 777 maintenance manual. That number there is 657bb. Now kate that means there are two sets of identifying numbers on this one part linking the debris to a boeing 777. Even without this possible piece of evidence u. S. Intelligence has concluded that this was a deliberate act. Why is that . Reporter analysts were told looked at the multiple course changes that the aircraft made after it deviated from its scheduled course. It was going from kuala lumpur to beijing. They determined that someone in the cockpit deliberately either programmed or steered the aircraft to fly towards very specific navigational points in the sky. As you see there, crossing indonesian territory and going towards the south indian ocean. After assessing that path that you are looking at there, these analysts said there were no way that an aircraft could make such Movement Without human intervention. Thats how they got to that conclusion. Also based on the little evidence that they do have now. A lot of work to do still, clearly. Thanks so much. On reunion island where the debris was found, the search continues today. Complicating efforts, if you can believe it a volcano erupting on the island. Some areas have already been evacuated. Searchers are actively looking for more debris along the coast right now. Reporter absolutely kate. Police helicopters were flying overhead through most of the day and on the beach that cleanup crew which spotted the first bit of debris they were down there. The sense is that perhaps if this is mh370, then we will learn a lot about the current that could have brought it here moving it so far from what was thought to be the search area. And if this is mh370, then that current will give us a broader sense of what should be the new search site which would be expected to encompass not just reunion but beyond perhaps to madagascar and the southeastern coast of africa. Of course everybody now is waiting for that confirmation that its mh370 before they start thinking about where else they need to be looking. Even while that is going on people here havent stopped their search. There have been so many false alarmed to this point. You can understand everyones trepidation on hesitation on this. As for the debris its still making that long journey to france for its analysis right . Reporter yes. The expectation is that it would get there later tonight your time, which would make it morning in france. Its actually two pieces debris. The wing remnant, that will go to the lab justand the remnant of the luggage heading to paris. Because this is under the courts judiciary investigation in france because of the involvement four french citizens were on the missing plane, this is now where the judiciary gets involved. It shows you how seriously they are taking this remnant. On monday they will have a working session that will include investigators from malaysia and then the judge overseeing this is going to instruct that the analysis begins wednesday also in the presence of boeing investigators involved in the analysis and malaysian investigators. But the sense we got from that lab is that given the equipment they have there, that they are expecting to start researching conclusions pretty soon after that kate. Long days for you. Thank you so very much for your reporting. Now, Richard Quest is here with me. Dennis moore is also with us an aviation accident investigator and a mechanical and Aeronautical Engineer and david gallo, the director of special projects. Its great to see you. Thank you so much. Richard, you are here with me. This is the focus. This is the piece of debris that they have. Its making its way to france. Experts with a keen eye are looking at so far is where is the damage and where isnt the damage. Right. As this video shows, you have the front end or if you like the leading end and youve got the trailing end of this flaperon. Lets hone in on exactly what we can look at so we can look here. First we have here is the first picture. This is the front end you are say, right . Yep. This is the what they call the leading end. The plane is going that way. This is the part that actually attaches to the aircraft. This is the bit that goes out into the back into the slip stream. This piece of equipment will move up. It goes up by maximum of ten degrees and down by 36 degrees. Thats what it is designed for. What are experts gleaning from where there doesnt seem to be damage and where there does in terms of maybe what happened . Where are the theories right now. Look at this. Theres almost nothing on that. Which suggests it certainly didnt bump into anything like the other part of the wing. It would be crushed. The damage is on this side the side panel. If we look at the rear of this this is the other side of it. Now you start to see some serious damage. Were talking about these barnacles. But there are tears under here as well. Yes. Look at the actual line of this thing. Its going like this. That has been jagged out and when we talked to david gallo, he will give us insight into what these barnacles which seem to be absolutely across the whole of the you can see them right here. Absolutely. What we have is a piece of the wing this flaperon lets be sensible about this. Its from a 777 and its more than likely than not from mh370. Lets call it what it is. And you have got this damage. You have got this good bit bad bit. And from that they can work out how it went into the water. That dennis is where your expertise sets in. The debris is headed to france. And then the engineers and the specialists, they will get their hands on it. What can engineers learn from examining how the metal tore apart or exactly the state of the metal in almost i would say a more molecular fashion . Well thats going to depend a little bit on how it has survived the more than a year in the ocean. Just as a point, it looks like the flaperon is actually mostly composite rather than metal. It may have a honeycomb upper and lower surface. What they are going to look at on a macro level is looking at the trailing edge. Did that break off being bent up . Did it break off being bent down . Did it fail in some other fashion . Being torn off to the left or to the right. From that looking at that and looking at the loads with the models of the structure, you can then analyze perhaps angles forces velocities at which it may have entered the water. Seems to be some of the key questions that we dont know right now. David gallo on this dennis raises an interesting point, how long it had been in the water. The fact it was in the ocean for so long could that wash away any of these clues and hinder this examination process the engineers are going to undertake now . Yeah. I think the contrary. I think that its almost like a science experiment unto itself. It has been floating for 500plus days and picking up the chemistry of the ocean coming along with some of the animals that grow on it the barnacles, for instance. Good biological forensic studies can tell us where those barnacles more or less came from. So we will learn an awful lot about the chemistry and the life on that piece of metal. Its not just about as david gallo is getting to its not just about this piece of metal. He is pointing out whats on the piece of metal. David, you can jump in on this. But richard has been pointing out, what is a barnacle what isnt a barnacle . We dont necessarily know. You are clearly more of an expert on that than we are. Barely. From my view of it it looked like many of the things that we see floating in the ocean that have been out there for some time. Looks like its own science experiment. When the atsb and others get their hands on it they will study every lit bit and extract every clue they can. Its got secrets that it has to give up. And now its up to the french experts to unlock it. Gentlemen, thank you so very much. For us next was there a Security Breach on board mh370 . We will show you how someone outside of the cockpit could have taken total control of the plane. Jeb bush on how he is going to handle donald trump at the first gop debate. The university of cincinnati cop who shot and killed an unarmed black man, tonight he wants his job back. A live report coming up. Unbelievable toenail fungus . Seriously . Smash it with Jublia Jublia is a prescription medicine proven to treat toenail fungus. Use jublia as instructed by your doctor. 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Breaking news on the search for Malaysian Airlines flight 370. New evidence that the piece of debris discovered off the coast of africa could be from mh 370. A second code is consistent with boeings 777 and mh370 is the only unaccounted for 777 in the world. U. S. Intelligence suthzggests a deliberate act from the cockpit took the flight off course. Theres questions about a Security Breach that could have taken place. Kyung lah is outfront. Reporter the debris still brings pilots no closer to a consensus on the greatest mystery of their profession. Theres all kinds of theories. Everybody has a different theory. Reporter u. S. Intelligence agencies believe its likely the plane was deliberately steered by someone in the cockpit. But retired United Airlines pit lot ross amer trained pilots at boeing. He says the debris launched a new round of speculation among his fellow pilots. Among the theories a section of the aircraft known as the ee bay may have been breached. Whats in the Electronics Bay . This was the brain and heart of an aircraft. In case of a 7 777 all the electronics that control the entire airplane are in that electronic bay. This is the most important part of this aircraft. Other than the engines. Every pilot that flies a 777, knows how to get down there. Reporter its designed for maintenance access. Here you can manage all Flight Systems taking total control of the plane. Were not going to show you where the access is on the aircraft. We will show you whats widely available on the internet. In this aviation video viewed tens of thousands of times, you can see in the bay various electronics, wires and green tanks. The concern floated by some pilots they say boeing manufactures and delivers a 777 with an unsecured access door. Most of the airlines add a lock and the access is hidden. Only crew and perhaps some Aviation Enthusiasts would know how to get in. Thats why a breach aboard mh370 is something the pilot says is possible but unlikely. Investigators around the world found no immediate red flags from anyone on board. More likely a catastrophic fire or one of the crew perhaps the captain or the copilot were somehow involved. One of the things that investigators do they never leave any stone unturned. They look at just about any possibility. Reporter pilots say they want to know they need to know what happened to mh370, not just to solve the mystery but for the field of aviation because it is after the accident investigation is over that aviation learns and is better able to prevent the next one. An excellent point. Outfront tonight, the former assistant director of the Fbis Criminal Investigative Division and miles obrien. Miles, asyou brought up the possibility that someone could have broken into the bay in your documentary. Were not going to show the video of the entrance to that hatch. Is this security vulnerability a real threat on all 777s . Yes. Well here is the thing. The 777 ships from boeing with an unlocked door to that bay, which is the brains of the aircraft. Its a computer aircraft. If you can get in there, you own that aircraft as it were. That door is located in the cabin area and it ships to customers unsecured. Theres no regulation by the faa or any of the other agent sigs requiring that door to be locked. Some airlines have ordered lock kits from boeing to do that. We shouldnt have to rely on airlines to make this decision. This should be a locked door period. Its a tremendous security achilles heel. It seems like it. Chris, it seems like this hatch provides access to every major system on the plane. How serious should folks be taking this . Kate if this is in fact, true, its an unacceptable vulnerability. I would be shocked if the Intelligence Services out there, the fbi and others werent aware of this vulnerability. Lets hope that if it exists theyre quietly working on the fix immediately. Thats a big question. Miles, does this theory in any way rule out the possibility that one of the pilots was responsible is responsible . As you said its not in the cockpit. Its outside of it. Well certainly, if you are a pilot in the cockpit already, you dont need the bay to control the airplane. You have all the controls you need. But we know by looking at this its almost guaranteed to be some sort of deliberate action. Human hand involved. So on your suspect list would you look at the crew. The captain and first officer, most likely to do this. Someone cant walk in there and come upon that hatch and even if they got in there, you need expertise to know what to do. Right . You do. You want somebody who has experience as an aircraft and power plant mechanic for example, who had worked on jet airplanes. This is a big enough room where you could stow away. It has a door which goes into the cargo hold. Theres possibilities for a stowaway. Im not saying thats what happened. I do know this is a vulnerability and n this aircraft. It needs to be addressed. It sure does. Chris, u. S. Intelligence said someone in the cockpit deliberately caused the plane to fly off course. It doesnt necessarily mean for nefarious reasons. But you think one of the pilots is responsible. Why . Well we dont know when that assessment was done. I agree with it because in any investigation, you have to anchor it with what you know. Theories are interesting. What you know is what you work with. You work out from there. What we know is that the plane Communication Systems were deliberately disabled. We know that the plane changed course dramatically and headed off in several different course changes. Theres a general consensus from what i have seen and reporting that that had to be done deliberately. That points to one of two people at this point, the pilot or copilot. They are a long way from establishing that as they found one piece of debris from the plane. Thank you both so much. Tonight, cnn investigates the mystery of mh 370. Dont miss our special report, tonight at 9 00 eastern. Outfront next donald trump accused of being incoherent talking tough on immigration one minute then saying this to cnn. I would get people out and i would have an expedited way of getting them back into the country so they can be legal. Zimbabwe wants the u. S. To extradite a dentist for killing a beloved lion cecil. Where is that dentist tonight . Seriously . Youre not at all concerned . About what now . Oh, i dont know. The apocalypse . Were fine. I bundled renters with my Car Insurance through progressive for just six bucks more a month. Word. Theres looters running wild out there. Covered for theft. Okay. Thats a tidal wave of fire. Covered for fire. What, what . All right. Fine. Im gonna get something to eat. The boys kind of a drama queen. Just wait. Wheres my burrito . [ chuckles ] worst apocalypse ever. Protecting you till the end. Now, thats progressive. The signs are everywhere. The lincoln summer invitation is on. Get exceptional offers on the mkz sedan. The luxury small utility mkc. The iconic navigator. And get a first look at the entirely new 2016 midsize utility lincoln mkx. Your choice of mkc mkz gas or hybrid for 369 a month with zero due at signing. Donald trumps tough rhetoric on immigration sent him soaring to the top of the polls. Its his take now on that same signature issue thats drawing criticism from fellow republicans. And fellow conservative republicans at that. His biggest defender of the day is sarah palin. Sarah murray is outfront. Reporter from his president ial announcement speech. They are bringing drugs. They are bringing crime. They are rapists. And some i assume are good people. Reporter to the campaign trail. Hundreds of thousands of people illegals coming over the border. Hundreds of thousands in jail. Reporter all the way to the u. S. Mexico border. There are areas you have to have the wall. Reporter donald trump has ignited a debate and drawn plenty of criticism over remashesremash s remarks on immigration. New attacks, this time from former allies after softening his tone. When you say legal, do you mean legal status or can they be eligible for citizenship . No citizenship. We will see down the line who knows what will happen. But legal status. You are open to its something i would think about. I would say right now, no im not open to it. I would say legal status. Reporter the conservative news network, one of the biggest cheerleader for him call his remarks mushy and incoherent