a swinging drive link is pivotally connected at its lower end to a forward support for a flap . the flap rear support is provided by a pivotal connection between a rear support point and the lower end of a swing link . the upper end of the swing link is pivotally connected to the upper end of a support link and the rear end of a slave link . the lower end of the support link is attached to a beam structure projecting rearwardly from the main wing section . the forward end of the slave link is pivotally attached to an intermediate portion of the drive link . rearward rotation of drive link causes the flap to translate rearwardly with a small amount of downward rotation until the flap is essentially completely extended . then , further extension of the mechanism rotates the flap a substantial amount downwardly . in a double slot embodiment , similar linkage is provided between a forward main flap and an aft flap .