there was that heat flash detected as well, it would begin to see the kind of picture painted of the last few moments of the aircraft which cost the lives of 224 people. >> matthew chance on that, thank you. cnn aviation analyst is joining me. matthew is reporting that unkorktistic sounds heard. what does that mean? >> it could be anything. it's hard to say. i think the good thing about it is they can attribute it to something if you have audio experts and sounds like they have a lot of people on the field helping out according to this report. maybe they can attribute it to something whether it's an explosion or something inside the airplane that's coming. it's hard to say. what it does say or at least what we're getting to at this point without getting