Czechoslovak Airlines Flight 001 was an Ilyushin Il-18B four engine turboprop airliner, registered OK-NAB, which was operating as a scheduled domestic passenger flight from Prague's Ruzyně airport to Bratislava-Ivanka Airport, both in Czechoslovakia, which crashed into the Zlaté Piesky (Golden Sands) Lake while attempting to land in Bratislava on July 28, 1976.

For reasons that are unclear, the crew executed a highly unstabilized ILS instrument approach to runway 22, with rates of descent as high as 4,320 fpm or 22 m/s (72 ft/s) instead of 10 m/s (33 ft/s); speeds varying from 225 to 435 km/h (140 to 270 mph) instead of 269 km/h (167 mph); and flap selection directly from 0 degree to full flaps instead of in gradual increments.

4 engine at 40 m (130 ft), but the ensuing right bank due to asymmetric thrust increased; the aircraft then lost control and struck lake Zlaté Piesky (Golden Sands) in a 60 degree right bank and a 60 degree nose down attitude.

He also claimed that Vienna airport offered an emergency landing permission but communist authorities rejected it.

[5] It is unclear how a surviving passenger would be aware of the captain's actions during the flight, or how searching for an alternate emergency landing site relates to an unstabilized approach with inadvertent thrust reversal deployment at Bratislava.