Malaysia Airlines Flight 17 is not the first passenger jet to be shot out of the sky, CNN reports.
At least six airliners have been shot down since 1973.
Among the deadliest: Iran Air Flight 655 involving a U.S. Navy ship.
Iran Air Flight 655 was an Iran Air civilian passenger flight from Tehran to Dubai that was shot down by the United States Navy guided missile cruiser USS Vincennes on 3 July 1988. The incident took place in Iranian airspace, over Iran's territorial waters in the Persian Gulf, and on the flight's usual flight path. The aircraft, an Airbus A300 B2-203, was destroyed by SM-2MR surface-to-air missiles fired from the Vincennes.
All 290 on board, including 66 children and 16 crew, died. This event ranks seventh among the deadliest disasters in aviation history, tenth if including the 9/11 attacks, which include ground casualties; the incident retains the highest death toll of any aviation incident in the Persian Gulf. The Vincennes had entered Iranian territorial waters after one of its helicopters drew warning fire from Iranian speedboats operating within Iranian territorial limits.