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The South tower at 9:59 AM
American Airlines Flight 11 crashed into the North Tower (1 WTC), and United Airlines Flight 175 crashed into the South Tower (2 WTC).
i would help you but question is not clear. on top of what south tower?
While there is a wide range of possible explanations for the collapse of the South Tower (2 WTC) before the North (1 WTC), it is believed that the lower impact of the plane on the tower (a full 15 stories under the same point on 1 WTC) and the passing of shrapnel and parts of the plane through three of four floor beams weakened the structure at an accelerated rate and brought 2 WTC down before its counterpart.
American airlines hit south tower at 9:03 am
Two world trade center
The tv antenna should point toward the broadcast station's transmitter tower. South has nothing to do with it.
At 9:03 am, 17 minutes after the first attack, United Airlines Flight 175 Hit The WTC South tower
the north tower! Most People say that the North tower was larger then the South tower because of its huge antenna; however, without the antenna on the North tower, the South tower was taller by 10-20 feet.
The North Tower included a 360 foot (110 m) transmission tower that raised its total height to 1,727 feet (526.3 m).The South Tower had a height of 1377 feet (420 m).There were 110 floors on each of the World Trade Center towers.The North and South towers of the World Trade Centre measured 417 metres (1,368 ft.) and 415 metres (1,362 ft.) tall respectively, making them the tallest buildings in New York from 1972 (completion) to 2001 (destruction), and also the world's fourth and fifth tallest buildings before collapsing.
The north, and the south tower had 99 elevators each.
10:27