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Flames. everyone on board died. ntsb and faa are investigating this crash. i'm joined by cnn's safety analyst and former faa safety inspector david sousy on the phone. what can you tell us about this airport? >> it's used as a hub for several charter operations and airlines. it's unclear if this is one of those operations or not at this point. >> so now this investigation begins. take us inside what investigators will be looking at. >> first thing they'll be doing, of course, is identifying who was on board the aircraft and taking care of those families and notifications. that will be step one...

Protected national park and u.s. officials want to find walter palmer, too. but no one seems to know where he is right now. zimbabwe's environmental minister announced the african country has started the extradition proceedings against palmer and hopes the u.s. will cooperate. >> unfortunately, it was too late the apprehend the foreign poacher as he had already absconded to her country of origin. we are therefore appealing to the responsible authorities for his extradition to zimbabwe so that he be made accountable for his illegal actions. >> and let's go live to johannesburg and bring in cnn'...

Piece of information. they're after anything, randi, anything at all that they can say about how this piece came off the aircraft. where it came off the snarkt was it in flight? was in the the water? what damage it sustained. is the damage consistent with what sort of attack upon the aircraft? those are the sort of pieces of information but i warn you they will probably be very scant. fred alluded to that. it's not going to be such as we found this and it therefore tells us that. i don't see that as being the ultimate goal here. it's going to be a very small piece in an extremely large jigsaw....

Diagnosis of depression? >> it doesn't. most people who are depressed, if they're going to harm themselves harm only themselves they do not kill a large group of people. so this really doesn't fit. what does it fit with? you have to think about sociopathy somebody who just had a plan they wanted to be infamous they wanted to be important, they wanted to hurt others and were willing to take themselves with that plan. and you also have to think about another diagnosis, which no one's mentioned, and that is bipolar disorder. that is because when you look at his age and past depression one possibi...

Some light bulbs oils and things to be used to get the aircraft fixed if there was something wrong with it in a light method. that is next to the aft department doors where it is typically put and that is what we believe is here. i've talked to several mechanics an they validated it was that. >> what would that tell you? >> what concentration of one part of the plane? >> it says something happened and from what we can tell and after talking to the mechanics that have worked for asia they both said this is from the right side of the aircraft and the slide looks like it is from the right side of...