The invention relates to multipurpose heavier-than-air aircrafts which can be used in the form of an airplane, helicopter or a sailplane. The inventive multipurpose heavier-than-air aircraft consists of a body comprising a tail assembly which is provided with a rudder, a pitch control surface and a chassis. A lifting forwardswept wing is fixed to the centre wing section of the body. A slotted opening closed with shutters is embodied in the top section of the body, wherein a driving engine used for sailplane mode and provided with a thrust propeller fixed to the shaft thereof is arranged. Said driving engine is cinematically connected to a carriage displacement drive by means of a main strut displacing mechanism. The carriage is provided with the position lock thereof corresponding to airplane, helicopter and sailplane flight modes. The carriage displacement drive is connected to an asymmetrical lever displacement mechanism. The major arm of said asymmetrical lever and an auxiliary strut are pivotally connected to the driving engine. Said auxiliary strut is pivotally connected to the rockshaft of the asymmetrical lever my means of a mechanism.