The worst aircraft accident in Czechoslovak history happened on October 30, 1975, in thick mist when a Yugoslav passenger aircraft approached Prague airport to land.

Around a dozen kilometres short of the landing strip, the DC-9 crashed with 79 of the 120 passengers killed.

The circumstances of the crash were never fully cleared up but a faulty altimeter is believed to be one of the main causes.

Most of the passengers on the plane were Czechs and Slovaks returning from holidays.