. >> reporter: carl, the flight data recorder is still missing. there's a chilling report about the other black box, the cockpit voice recorder describeing exactlyily what it sounded like in that plane. it was a glider friends say lubitz first learned to fly. friends that flew with him say it was clear he had a love for the sky. what's not clear is why he would crash a plane carrying 149 others into the side of a mountain. no answers but today the german tabloid reported a timeline of the last minutes from the cockpit voice recorder. the flight started normally with the captain apologizing for a delay. during the descent he mentioned to the co-pilot lubitz he didn't get a chance to use the bathroom. lubitz says he can take over at any time. a few minutes later, he's prepareing for dus dorfdus -- dusseldorf. lubitz says you can go now. the captain leaves. shortly after, lubitz is heard pushing his chair back. the door clicks shut. the captain begins banging on the door screaming, for god's sake, open the door. passengers scream in the background. al

. >> reporter: carl the flight data recorder is still missing. there's a chilling report siting the other black box, describing exactly what it sounded like inside the plane during its final minutes. it was a glider that friends say an degrees lubitz first realized his dream of flight. this was by a german tv station that shows lubitz at the control. friends that flew with him say it was clear he had a love for the sky. what's not clear is why he would crash the plane killing 149 others into the side of a mountain. no answers. today the german tabloid reported a time line of the last minutes from the cockpit voice recorder. it started normally with the captain apologizing for the delay. he mentions the co-pilot that he did not get the chance to use the restroom. lubitz tells the captain he can take over at niz time. the captain tells lubitz to prepare for landing at dusseldorf. a few minutes later, he says you can go now. lubitz is heard pushing hitz chair back the door clicks shut. the plane begins to descend. air traffic control calls. no answer

the running water. peace of snow-capped peaks. peace to loved ones lost. carl penhaul. >> search and recovery teams are looking for the flight data recorder. they hope it can reveal more on what happened at the flight deck. we have an expert joining us. thank you for taking the time to speak to us. we have heard so many new threads on this story. i want to start by asking you if i may, from what you heard from authorities, who has stood out to you? what is not making not much sense? >> the fact that it was so easy to do which is astonishing, the fact that the pilot couldn't get back in. i have to say, the speed with which the french authorities actually concluded what happened. and in such detail. that's extraordinary it's done so very quickly. in terms of aircraft safety, as i said, it seemed really simple to do and it shouldn't have been that simple, really. >> what we have seen -- of course we've talked about this before is pilot suicide has occurred before, but rarely of course. we're hearing many airlines particularly here in europe are changing the cockpit rule to have two people in the cockpit at all times. do you think th

the flight data recorder. also today 325 families have made their way to the crash site. cnn's carljoins me from southern france. ultimately it may not be possible to identify all the victims, right. >> reporter: yeah that's what we've been hearing today, jake. the terrain is rugged. i hiked up there a few days ago. i got a really perspective on what's going on. the recovery teams so far have managed to recover and identify at least bodies or parts of bodies. because of the speed of this crash, more than 430 miles an hour when it slammed into the steep side of the ravine some of the bodies were broken up into small parts. what that crash investigators are saying today is that some people may not get any remains of their loved ones back. that is going to be a hard pill to swallow, but certainly in terms of the bodies they have identified before. >> seems like we lost carl. he was in southern france. carl thank you so much for what you were able to report. difficult terrain to broadcast from. so much information coming out today prompting tough questions about whether officials should