at new york's jfk international airport, a large transcontinental airplane clips the tail of a smaller regional jet, spinning it with jarring force. april 11th, 2011, a small delta comair bombardier arriving from boston lands at jfk. and passengers on board get a frightening reminder of one of the reasons why they should not take their seat belts off before they reach the gate. >> 563. send the trucks. i just hit it. >> a massive airfrance airbus a380, taxing the runway, crashes into it, turning it about 45 degrees. >> emergency equipment. >> once ground control receives word of the accident, they immediately dispatch emergency personnel. after moving both planes away from the crash site, crews work to cleanup any debris on the runway. the cause is still being