the weather. that was the last that anyone heard from these pilots. now, you and the experts have been telling us all morning, whether it's rarely the cause of an airplane disaster but still you would have to think that the weather here based on what we have heard and what we know is a contributing factor. >> right. well weather is a contributing factor in a great many of aircraft cases, i mean in older days i mean in the '60s and '70s, weather was a huge factor. what's happened in developed countries, the united states and western europe most of asia is you have so many other things on board radar, in-house meteorological departments. you kind of avoid that weather. even in the united states we had cases crashes have been caused flying into level 6 thunderstorms and making wrong decisions. weather contributes, because of advances in technology at least for most places it has been