Well, obviously this wasn't terrorism - plane too small, no casualties except the pilot, no other small planes running into buildings at the same time, no passengers reporting being hijacked.../sarcasm
Still if the AP office is right there in the building hit by the plane, I agree with GovtShrinker, AP ought to have been right on it.
Did any real understanding ever come on the man who flew into the Pirrelli building in Italy? Was he depressed over a financial problem? Was he trying to spy the latest Pirrelli calendar? Was it an act of protest?
The man who flew his plane at the White House during Clinton's presidency wasn't muslim and it could do no major damage either but it is quite uncommon for planes to crash into buildings accidently.