On 24 November 1956 the ČSA Czechoslovak Airlines Ilyushin Il-12B "OK-DBP" was an international scheduled passenger flight from Zürich to Prague.

[1] Earlier in the day on 24 November 1956, the airplane had already done a return flight from Prague to Zürich.

[3] In the evening on 24 November 1956 the airplane departed again from Zurich-Kloten Airport for an international passenger flight from Zürich to Prague.

[8] Among the passengers were five people from the Czechoslovak ice hockey team TJ Baník Chomutov ZJF (now called Piráti Chomutov) and a reporter, playing in the highest national league, the Czechoslovak Extraliga.

The six who changed to this flight were the club's founders, Stanislav Vaisochr, the chairman of the physical education unit Jan Výborný, goalkeeper Miroslav Pašek and forwards Zdeněk Nový and Ondřej Borovička and a reporter.