folks who know the planes best who have the best and most credibili credible chetheories, what do pilots find most credible about the plane? >> this is such a magnificent airplane. it just doesn't come out of the sky. there are so many back up systems had there been a mechanical failure. there seems to have been enough time that a emergency distress call would have been given off. that tends to lead a number of the people myself included that there was some type of human intervention that contributed to this accident that caused that aircraft to deviate from it's intended flight path. we don't know who was in the cockpit at the time. what i believe is that, that aircraft was purpose pufully tud