Bulgarian TABSO Flight 101 crashes near Bratislava, Czechoslovakia, killing all 82 people on board.

TABSO Flight 101 was a scheduled service of the Bulgarian national airline from Sofia, Bulgaria, via Budapest, Hungary, and Prague, Czechoslovakia, to Berlin Schönefeld Airport in East Germany. The service was operated by the airline's 1960s' flagship equipment, the Ilyushin Il-18B airliner. On Thursday 24 November 1966, due to bad weather the aircraft was diverted to Bratislava airport, but when the flight resumed, the aircraft crashed into the surrounding hills shortly after takeoff, with the loss of 82 lives. The crash site is within modern-day Slovakia, and is considered that country's deadliest aviation disaster.

Bratislava is the capital and largest city of the Slovak Republic and the fourth largest of all cities on the river Danube. Officially, the population of the city is about 475,000; however, some sources estimate the daily number of people moving around the city based on mobile phone SIM cards is more than 570,000. Bratislava is in southwestern Slovakia at the foot of the Little Carpathians, occupying both banks of the Danube and the left bank of the River Morava. Bordering Austria and Hungary, it is the only national capital to border two sovereign states.

The Czechoslovak Socialist Republic, known from 1948 to 1960 as the Czechoslovak Republic, Fourth Czechoslovak Republic, or simply Czechoslovakia, was the Czechoslovak state from 1948 until 1989, when the country was under communist rule, and was regarded as a satellite state in the Soviet sphere of interest.