Air Data Information News Today

The families of 150 people on board a plane that went down in the french alps are wondering not only where are their loved ones but what happened? what happened to bring that plane down relatively quickly and what happened that authorities announced fairly quickly that there were likely no survivors? i want to get back to jim bittermann whos live with us in paris. jim, i understand were getting information from one of the provincial presidents in the region who seems to have some information fro...

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That plane came down in the mountains in the southeast of france. and the problem right now, it is extraordinarily remote, it is so hard to access. here with me in new york is cnn aviation analyst, a 777 captain and contributing editor for "flying" magazine. also joined by mary schiavo whos live in our london newsroom right now. les, lets talk about the flight path. it was headed to dusseldorf, 45 minutes into this flight, all of a sudden, no contact at all. and yet were getting a notification f...

Speculating on this one. the important thing about the pitot tubes if indeed this contributing factor to it, if they froze up, this not only feeds information to the pilots and the autopilot itself, but this is a computerized airplane. its all flied by wire. that information is required by the computers for all the air data information. >> we also know that apparently that plane had been checked out well. it was in, quote, good repair -- being checked out just yesterday as well, whether somethin...

Inclement causing this crash, without question, we know that bad, bad weather is settling in in this area. and that is hell for helicopters. its just awful. mary and les, thank you for that. if youre watching and wondering if theres a way to help, there certainly is. cnn would like to help you do this. go to our website, cnn.com/impact, plenty of information there for how you can reach out and help those who are affected by this tragedy. were following all the developments on this crash. well br...

Descent. but as les just said, thats not so precipitous. >> right. and i checked the descent rates for this aircraft, looked at the charts and the tables and this is one thats allowed. now, at this altitude, though, the recommended descent rate is less than that. but its not the kind of a descent rate that would cause pieces of the plane to come apart. it wasnt an uncontrolled descent rate and the plane wasnt dropping from 38,000 feet at terminal velocity. but this is higher than whats recommend...