Oh, il be happy enough to crash a plane in a building to prove my point, a 737-400 wont make a 10 mile big hole, the force of the impact will concentrated on the nose, as soon as it hits a wall the force will be partitialy bounced bakc to the plane the main fuselage of the plane will bore a hole in the structure and the wings will cause much damage because of the amount of fuel conserved in the wings itself.