Updated

• Sept. 11, 2001: An American Airlines flight and a United flight en route to Los Angeles from Boston crash into the World Trade Center after being hijacked; more than 4,000 dead and missing, including 157 on planes.

• Sept. 11, 2001: American Flight 77 en route from Washington's Dulles International Airport to Los Angeles is hijacked and crashes into the Pentagon; 189 dead and missing, including 64 on plane.

• Sept. 11, 2001: United Airlines Flight 93 en route from Newark, N.J., to San Francisco is hijacked and crashes near Pittsburgh; 44 killed.

• Oct. 31, 2000: Singapore Airlines jumbo jet slams into an object before takeoff for Los Angeles and bursts into flames; 81 killed.

• July 25, 2000: Air France Concorde headed to New York crashes into hotel outside Paris shortly after takeoff; 113 killed.

• July 17, 2000: Alliance Air Boeing 737-200 crashes into houses during second landing attempt at Patna, India; 51 killed.

• April 19, 2000: Air Philippines flight from Manila crashes on approach to Davao, Philippines; 131 killed.

• Jan. 31, 2000: Alaska Airlines Flight 261 plunges into ocean off Southern California on flight from Mexico to San Francisco; 88 killed.

• Jan. 30, 2000: Kenya Airways A-310 crashes into Atlantic Ocean shortly after takeoff from Abidjan, Ivory Coast, to Lagos, Nigeria; 169 killed.

• Oct. 31, 1999: Egypt Air Boeing 767 crashes into Atlantic after taking off from John F. Kennedy Airport in New York on flight to Cairo, Egypt; 217 killed.

• Feb. 24, 1999: China Southwest Airlines plane crashes in field in China's coastal Zhejiang province; 61 killed.

• Dec. 11, 1998: Thai Airways International A-310 crashes on domestic flight during third landing attempt at Surat Thani, Thailand; 101 killed.

• Sept. 2, 1998: Swissair Flight 111 from New York to Geneva crashes off Nova Scotia; 229 killed.

• Feb. 16, 1998: Airbus A300 owned by Taiwan's China Airlines crashes near Taipei's Chiang Kai-shek airport while trying to land after flight from Bali, Indonesia; 196 killed.

• Feb. 2, 1998: Cebu Pacific Air DC-9 crashes into mountain in southern Philippines; 104 killed.

• Aug. 5, 1997: A Korean Air Boeing 747 crashes near Guam Island; 228 killed.

• Nov. 12, 1996: Saudi 747 collides shortly after takeoff with a Kazak Ilyushin-76 making its landing approach; 349 killed.

• July 17, 1996: TWA Flight 800, a Paris-bound 747, explodes and crashes off New York's Long Island shortly after takeoff from Kennedy International; 230 killed.

• Sept. 8, 1994: Pittsburgh-bound USAir Flight 427 rolls out of control and spirals 6,000 feet into a ravine six minutes before it is due to land; 132 killed.

• Dec. 21, 1988: Pan Am Boeing 747 crashes in terrorist bombing over Lockerbie, Scotland; 270 killed.

• July 3, 1988: Iran Air A300 Airbus shot down by USS Vincennes over the Persian Gulf; 290 killed.

• Nov. 28, 1987: South African Airways 747 crashes off the island of Mauritius in the Indian Ocean; 160 killed.

• Aug. 12, 1985: Japan Air Lines 747 crashes into a mountain on a domestic flight, the worst single-aircraft crash toll in aviation industry; 520 killed.

• June 23, 1985: Air India Boeing 747 crashes off the coast of Ireland because of terrorist-planted bomb; 329 killed.

• Nov. 27, 1983: Avianca Boeing 747 crashes near Madrid's Barajas airport; 183 killed.

• Sept. 1, 1983: Korean Air Lines Boeing 747 shot down by a Soviet fighter after flying through Soviet airspace near Sakhalin Island; 269 killed.