>> Except that you can't be sure this bad flight plan doesn't contain information that will lead to a collision. Flight plans don't contain any information rel

>> Except that you can't be sure this bad flight plan doesn't contain information that will lead to a collision. Flight plans don't contain any information relevant for collision avoidance. They only say when and where the plane is expected to be. There is not enough specificity to ensure no collisions. Things change all the time, from late departures, to diverting around bad weather. On 9/11 they didn't have every plane in the sky file a new flight plan carefully checked against every other...