I was thinking airliner- do you know of any articles which say what Moussaoui had studied or asked to train on in flight school, or how far he got in his studies? Atta homed right in on the correct simulator.
I know of one famous 747. But he wouldn't stand a chance of getting near it. What other reason would there be for choosing a 747... those are used for really long flights, international flights more than flights in the US.