The airplane accident caused the largest number of death is the 11 September terrorist attacks which also referred to as September 11, September 11th, or 9/11. This accident was a series of four coordinated terrorist attacks launched by the Islamic terrorist group al-Qaeda upon the United States in New York City and the Washington, D.C. areas on September 11, 2001. That morning, 19 militants associated with the Islamic extremist group al-Qaeda hijacked four airliners and carried out suicide attacks against targets in the United States. Two of the planes were flown into the towers of the World Trade Center in New York City, a third plane hit the Pentagon just outside Washington, D.C., and the fourth plane crashed in a field in Pennsylvania. The attacks resulted in extensive death and destruction, triggering major U.S. initiatives to combat terrorism. According to SP Schwartz, as of August 16, 2002, a total of 2,726 death certificates related to the World Trade Center attacks had been
Cited: Goldberg Alfred. Pentagon 9/11. U.S Government Printing Office. Washington, D.C. 2007 ICAO. ICAO Annex 13 Appendix. Aircraft Accident and Incident Investigation. Web. 23 March 2007. Kennedy Kelly. Death rates from guns, traffic accidents convergin. USA Today. January 9, 2013 Schwartz S. The World Trade Center disaster: lessons learned. Web. September 11, 2002.