a mechanical malfunction? >> i'm very skeptical with the data still. when you're talking losing 40,000 feet or dramatic amounts of altitude, it's impossible to me, which amounts of altitude, it's impossible to me. which means that the data if it was coming from the engines there's a possibility that that data was corrupted, maybe by an icing situation, even though we're saying that it was clear air. we don't know. i'm talking about a situation from the engines itself. because the engines have as we talked during the break have a similar system to the airplane itself. >> the pitot tubes which were in a different part of the plane though, correct, responsible for the crash of air france flight 447. >> they contributed to the crash. >> you're saying the dramatic changes in direction could have happened because the flight crew what so busy dealing with something else.