Abstract: A landing gear unit comprising at least one contact member, a shock absorber and a system for the dissipation of static electricity, the shock absorber being connected to the contact member. The static electricity dissipation system comprises a framework integral with a rotation shaft of the contact member and provided with a main guide rail and a bottom stop, a slider along the main guide rail, an elongate metal wand integral with the slider extending towards the bottom stop, a drive part connected to the shock absorber, movable with respect to the rotation shaft, and moving with respect to the framework towards the bottom stop, when the shock absorber is compressed, and generating a sliding of the slider along the main guide rail.