Iran Air flight 655, flight of an Iranian airliner that was shot down by the missile cruiser USS Vincennes on July 3, 1988, over the Strait of Hormuz, killing all 290 people on board.The passenger plane, which was in Iranian airspace, had been incorrectly identified as a fighter jet. Iranian officials are denying that one of their missiles shot down the passenger jet. Boris Johnson has said that Iran shot down the Ukrainian passenger plane in Tehran after Western intelligence agencies concluded that the downing of the jet was most likely an accident. Iran’s military ‘unintentionally’ shot down a Ukrainian passenger plane, the country has finally admitted. Russia said the accusations against its military were "absolutely threadbare". This latest incident comes just a month after a Ukraine International Airlines passenger plane was shot down shortly after take-off from Tehran, killing all 176 people on board. The passenger flight was en route from Amsterdam to Kuala Lumpur when it was shot down over conflict-hit Ukraine. A spokesman for the armed forces called the allegations ridiculous and … Plane Shot Down Because of Human Error, Iran Says The military said that the Ukraine passenger jet had been misidentified as a cruise missile flying … Iran later said its forces had shot it down unintentionally, having mistaken the aircraft radar return for an inbound missile to Tehran.