According to [1], 235 aviation accidents occurred in helicopter units and subdivisions of state aviation, as well as in airlines and enterprises of civil aviation over 10 years from 1996 to 2006, 42 (18%) of them due to helicopters entering spontaneous left rotation [2]. 10 air accidents occurred at take-off (4 of them are crashes, 6 are incidents), 27 – at landing (12 crashes, 15 incidents), 5 aviation accidents – at hovering and near-terrain movements (1 crash, 4 incidents). Various publications have shown that trained flight personnel can cope with uncontrolled rotation. For example, the Syzran Air Force Engineering Academy named after Gagarin and some other schools have the similar course. The procedure for helicopter-aircraft piloting varies significantly due to different aerodynamic and physical properties of the aircraft motion principle. There are two characteristic features of helicopter motions in space. The first one is a probability of the lifting rotor (LR) “ring vortex” occurrence [3] and the second one is the occurrence of uncontrolled left rotation during the single-rotor helicopter flight [4, 5]. The stated specifics of a single-rotor helicopter may be the causes which lead to aviation accidents [6, 7]. Let us study the last special feature in order to develop the counteractions after analyzing the problem.