ios, instrument landing system, that s only in weather. otherwise, you are on visual flight rules. they land all the time. they have their depth perception. so not having the ios on a clear day it was clear at this building, unlimited. was not a problem. should not have entered into this. shannon: okay. somebody with the airline has said there were not engine problems on the plane the ceo. does that suggest to you he has had a conversation with the pilots and he probably has an initial assumption about what happened. i think it does, which is a little bit troubling because if it wasn t an engine problem and if it wasn t he said his pilots were very experienced, intimating that they couldn t have made a mistake. then where is it? it s one of two things. huan engine problem or you had a pilot error. now, it could have been a flight control problem, but nowhere along the line do they say, ear call out, we are having flight