82 fatalities

Flight LZ101 Diversion and Crash Near Bratislava (LZ-BEN)

Bratislava-Ivanka-Milan Rastislav Štefánik, SlovakiaTakeoff (climb)

On November 24, 1966, an Ilyushin II-18 (registration LZ-BEN) operated by Transportno Aviatsionno Bulgaro-Savetsko Obedinenie - TABSO was involved in an aviation accident near Bratislava-Ivanka-Milan Rastislav Štefánik, Slovakia during takeoff. 82 people were killed. Investigators recorded the probable cause as: The Commission could not definitely establish the cause of the accident. The most probable cause was assumed to be insufficient evaluation of terrain relief and weather conditions in the Bratislava Airport control zone by the aircraft crew and lack of… This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 2 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

A four-engine aircraft on Flight LZ101 from Sofia to Berlin diverted to Bratislava due to weather in Prague. After resuming its flight, it crashed into wooded mountain terrain, killing all 82 occupants.

Flight Details and Diversion Flight LZ101 was a scheduled international service operating from Sofia to Berlin, with intermediate stops in Budapest and Prague. The four-engine aircraft departed Budapest-Ferihegy Airport at 1146 local time, bound for Prague. During the flight, the crew was informed that Prague-Ruzyne Airport was closed to all traffic due to poor weather conditions. Consequently, the crew diverted to Bratislava-Ivanka Airport, where the aircraft landed at 1258 local time. ## Resumption of Flight and Crash At approximately 1550 hours, the pilot-in-command decided to resume the flight to Prague. The aircraft took off from Bratislava Airport at 1628:30. Following takeoff, the crew executed a starboard turn in accordance with flight clearance instructions, which directed a right turn onto the OKR Beacon, a climb to 300 meters, and then a climb onto the NI beacon to a flight level of 5,100 meters. At 1630:20 hours, the flight was requested to change to the ATC approach service frequency of 120.9 Mc/s. The crew confirmed receipt of this message but did not retune the radio. Shortly after, the aircraft crashed into wooded ground in the mountains. The impact occurred 8 kilometers from the threshold of runway 31 at Bratislava Airport, at an altitude of 420 meters above mean sea level, which was 288 meters above the airport level. The aircraft was totally destroyed, and all 82 occupants perished in the crash.

Probable cause

The Commission could not definitely establish the cause of the accident. The most probable cause was assumed to be insufficient evaluation of terrain relief and weather conditions in the Bratislava Airport control zone by the aircraft crew and lack of adaptation of the flight to these conditions. The Commission noted serious reasons to doubt whether the crew thoroughly evaluated the geographical and meteorological situation and drew necessary conclusions in choosing the take-off runway, accepting the flight clearance, and performing the takeoff and departure. The possibility was also admitted that the non-maintenance of the 15° bank and 400 km/h speed (or the lowest possible limit of 360 km/h), which had a causal connection with the accident, could be partly due to errors in controlling and navigating the aircraft.