CNN CNN Newsroom December 2, 2013 18:34:00
People and injured dozens more. they've downloaded data from both of the on board recorders, tweeted out this picture of one of them. the recorders will play an important role in helping to determine if speed was a factor. joining us the former ntsb managing director peter goelz. how much are we going to learn? investigators from there's recovered data recorders? >> i think we're going to learn a great deal. i think if we're focusing in on speed and braking, the data recorders, while they're not as complex as aviation data recorders, it will give you the essential information. most importantly...