[newsperson999]

people that were listening to airwaves said the pilot reported landing gear trouble....

CNN said maybe the pilot was distracted by this and he hit the building..LOL!

[Utopia]

pilot was distracted

If you're distracted, you can't fly straight and level. The plane crashed straight and level.

[99tango]

Given the distance from takeoff to impact, if he started with a full tank of fuel, how much fuel would still be in the tank to cause a major explosion in the building? Keep in mind the reports that there was smoke seen from the plane prior to impact.