I was referring to the horizontal positioning (after hitting "post" I figured you'd miss the point). Look at the pictures - such a hit is hard enough to do intentionally.
If the pilot had no control of the flaps,
then he would have had to be intentionally flying straight and level at the building the moment ALL directional controls failed, a particular minute of angle (or less). Supremely unlikely.
Or are you saying that it is with 100% certainty that it can never ever happen?
There is one law of probability: small enough probabilities don't happen in real life.
Pointing the plane in the right horizontal direction would have been at best a 1/1296000 chance (one second of angle), multiplied by the chance of all 5 directional controls (four vertical, one horizontal) failing simultaniously at the moment he's pointing in that particular direction. Look at the crash photos again, with the impact perfectly horizontally centered, and an aesthetic distance from the top of the building - do you REALLY think this was just an accident?
There is a chance that all the air in this room will suddenly flow into my cube and implode me with the pressure. I'm not worried about it. Nor do I think that crash was accidental; maybe not terrorist per se, but not an accident.
Actually I have to disagree with you there. Coincidences DO happen, even the most improbable ones.