search efforts for air flight france 447 which disappeared in the atlantic. all that aside, weather has been the main focus here. because the pilots relatively experienced the aircraft itself relatively new t. airline with a flewless safety weather t. pilot said they were concerned about the weather. do you see a comparison between this flight and what you studied in air france flight 447? >> sure absolutely. in many ways it's the same situation. they were approaching in fact the same tuned i kind of intertropical convergence cell. in the case of air france 447, they did get icing and the pilots pulled back on that aircraft airbus 330 into a stall. it was that handoff between the computer saying i can't handle the spurious information. you fly the plane, where things started going wrong.