instructor mitchell casada. aviation analyst miles o'brien and richard quest. martin, the map that the australians released last night says that the plane would have been traveling 400 knot as hour to get to the new search area. what does that tell us if anything about the altitude the plane was flying? >> reporter: well, we're still not clear on that particular one. for instance, 400 knots sounds like a lot of speed. but it's actually not as fast as what this aircraft would typically fly when it was cruising at 35,000 feet. for instance, right now we're doing 478 knots. so it was going slower than it actually would normally do. and the question is, where was it in altitude? we know that after it turned it dropped off of radar and the transponder disappeared thought went down we believe to around 12,000 feet. so mitchell, i put it to you. if you're doing 400 knots at 1200 feet, naturally that is going to be a lot different and