Nope, we don't, and I've read the whole thing.
Who was flying the plane? Who else was aboard? What kind of plane was it? And don't tell me we KNOW the Swiss geezer was flying it at impact, because we don't. He may have been who the controllers thought was flying the plane, he may have filed some sort of flight plan saying he was flying the plane, he may have been in the plane when it crashed, but under no circumstances can we be sure someone else didn't fly it into that building.
I agree 100% with Hotspur. Luigi was not at controls but may have put up a fight? thus engine or gear problem.