Ah, things are changing are they Amos?

"Bush was handed a good, solid intell briefing well in advance of 9-11, stating that bin Laden would use planes to attack the US."

Is not quite the same thing as:

"when they were briefed that bin Laden was thinking of using planes as weapons;"

You still haven't provided your source of information. The Commission looking into the 9/11 attacks mentions heightened risk/likelyhood of aeroplane hijacking as did the 40 Briefing Notes mentioning Al-Qaeda that were sent to the President - None mentioned the use of aircraft as weapons.