The aircraft , traveling at about 404 knots ( 465 mph ; 748 km\/h ) and carrying about 10,000 U.S. gallons ( 38,000 L ) of jet fuel , hit between the 93rd and 99th floors of the North Tower .
The aircraft , traveling at about 466 miles per hour ( 750 km\/h ) and carrying about 10,000 U.S. gallons of flammable fuel , hit between the 93rd and 99th floors of the North Tower .