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V1, Rotate, V2 - the three critical speed points that determine takeoff, on which a lot depends. For each flight, for each aircraft, the determination and the nose runner lift speed come at a different point. It doesn't matter how heavy the particular plane is, and what weather conditions prevail at the moment of take-off: there is a favorable headwind or 38-degree heat is raging at the airport. But how do pilots calculate these speed points? What happens in an emergency if the aircraft has already left the decision speed? Why do eastbound flights often fly over the Atlantic at 1200 km/h? What is the difference between airspeed and ground speed? What restrictions come into effect during landing if the runway of the given airport is wet or snowy, and there is also a crosswind? Exciting questions and practical answers from Captain Tamás Darida, the tour guide of the Aeropark. (Editor: Balázs Kránitz)