Abstract: Contact link for flight controls of aerodynes, especially helicopters. The link comprises a rod (2) mounted axially slideably over a limited stroke under tension and under compression in a body (1). A leaf spring (35) subjected to compressive buckling prestress is accommodated in a recess (27) of the rod (2) between two supports (36, 37) pushed against stops of the rod (2) and stops of the body (1). Under any axial tensile or compressive force higher than the prestress of the leaf spring (35), one of the supports (36, 37) is brought nearer to the other, so that the leaf spring (35) works by buckling, and its central part increases its deflection to an extent amplified in relation to the axial stroke of the rod in the body and shifts radially a movable contact member (55) actuating an electrical contactor (45) fastened in the recess (27) of the rod (2). The contact link is used for equipping flight controls for cutting in or cutting out an automatic pilot.