this one is for mikey kay. the plane dropped from 35,000 feet to 12,000, what would have been its fuel range? i don't know if you know that. >> that's a great question. what we're seeing at the moment, is conflicting reports. we're seeing complementary information. we know that the lower an air force goes, the less efficient it becomes in terms of endurance. it would bring into question whether a boeing 777 could make it down to the area that all of the focus has been on. so, they're noncomplementary in that respect. what i would like to see in the investigation, is trying to think outside of the box, and corroborate with the evidence we got. and drawing a line back up to the last part of the ping. looking how long that would be. it's probably on the outer bounds of the endurance. it would have to fly close to singapore. they would use it as a leapfrog to get to europe. and through ind knees ya. are we getting radar traces from them? there's a lot of conflicting evidence going on. and the sad thing is, if we're

i'll ask you this one, this one is from mikey kay. if the plane dropped from 35,000 feet to 12,000, what would have been its fuel range. i'm not sure if you know that. >> it is a great question. i think what we're now seeing at the moment is contradictory reporting. what we're seeing is noncomplementary information. to the point, if the aircraft dropped to 12,000 feet and is heading westbound toward the malacca strait, we know that the lower an aircraft goes, the less efficient it becomes in terms of endurance and what that would do is bring into question whether a boeing 777 could make it down into the area that all this effort is being focused on off the southwestern tip of australia. noncomplementary in that respect. what i would like to see is try to think out the box and corroborate the evidence we have got in terms of drawing a line back from where the search is going back up to the last transponder ping, looking at how long that would be. probably on the outer bounds of the trouble 7s endurance and it would have to fly close to

aviation analyst jeff wise, a science journalist, mikey kay, former adviser to the uk ministry of defense and aviation analyst maria schiavo, christine densen, oercean explorer and mis o'brien, a pilot and aviation analyst as well. miles, i'll begin with you. this new information, a game changer. if so, why? >> i think so, don. what we're seeing there is the evidence of a crew that was dealing with some sort of calamity. we don't know what caused that. that could have been a number of things we can talk about later. but was trying to get an airplane that was at 35,000 feet with -- where the air is very thin as we just heard, down to an altitude as quickly as possible where the air would be satisfactory for people to breathe. so that is what we call a high dive in aviation. it is -- we still have to look at a few things, how rapid the descent rate was, a few details we need to gather, but the impression we get is of a plane that is turning around, 180 degrees, and getting down as quickly as possible. so what would lead to that? a rapid decompression of some kind, perhaps a fire, perhaps a