For fixed-wing aircraft, autorotation is the tendency of an aircraft in or near a stall to roll spontaneously to the right or left, leading to a spin (a state of continuous autorotation).[1][2]
^Clancy, L.J., Aerodynamics, Sections 16.48 and 16.49
^Stinton, Darryl, Flying Qualities and Flight Testing of The Aeroplane, Chapter 5 (p.503)