July 27 – El Al Flight 402, an international passenger flight from London to Tel Aviv via Vienna and Istanbul, strayed into Bulgarianairspace and was shot down by two Bulgarian MiG-15 jet fighters. It later crashed near Petrich, killing all 7 crew and 51 passengers on board. The crash took place amid highly strained relations between the Eastern Bloc and the West and was the deadliest involving the Constellation at the time.[11][12]