Abstract: This bistable switch (24) is intended to be fitted in an aircraft and comprises a frame (26) and a control means (34, 94) which is intended to be operated by a user, the control means (34, 94) being movable relative to the frame (26) between a first control position and a second control position. This switch (24) comprises a leaf spring (52) which is mechanically connected to the frame (26) and to the control means (34, 94), the leaf spring (52) being arranged in a buckling state and being configured to switch between the two control positions in each of its two stable buckling positions, respectively.