An apparatus for varying a camber of an aircraft wing, comprising: an aircraft wing ; a flexible trailing edge connected to an aft end of the wing , said flexible trailing edge comprising; a flexible upper surface , and; a rigid lower surface ; at least one slider link having forward and aft ends, wherein the aft end of said slider link is secured to the flexible trailing edge rigid lower surface ; a bell crank actuating mechanism arranged internally to the wing , forward of said trailing edge rigid lower surface; wherein said bell crank actuating mechanism is pivotably connected to the forward end of the slider link ; and wherein when the bell crank mechanism is actuated, the slider link moves in a forward and aft direction causing the flexible upper surface to bend, selectively varying the wing camber; wherein said bell crank actuating mechanism comprises: an actuation bell crank ; a connector bar ; an extension bell crank ; and a retraction bell crank ; the extension bell crank , the retraction bell crank and the actuation bell crank being pivotally attached to the connector bar ; and wherein said bell crank actuating mechanism is configured such that: the actuation bell crank is attached to the slider link for rotation by the connector bar ; the connector bar is displaceable by the extension bell crank for aft motion of the slider link ; and the connector bar is displaceable by the retraction bell crank for forward motion of the slider link . an aircraft wing ; a flexible trailing edge connected to an aft end of the wing , said flexible trailing edge comprising; a flexible upper surface , and; a rigid lower surface ; at least one slider link having forward and aft ends, wherein the aft end of said slider link is secured to the flexible trailing edge rigid lower surface ; a bell crank actuating mechanism arranged internally to the wing , forward of said trailing edge rigid lower surface; wherein said bell crank actuating mechanism is pivotably connected to the forward end of the slider link ; and wherein when the bell crank mechanism is actuated, the slider link moves in a forward and aft direction causing the flexible upper surface to bend, selectively varying the wing camber; wherein said bell crank actuating mechanism comprises: an actuation bell crank ; a connector bar ; an extension bell crank ; and a retraction bell crank ; an actuation bell crank ; a connector bar ; an extension bell crank ; and a retraction bell crank ; the extension bell crank , the retraction bell crank and the actuation bell crank being pivotally attached to the connector bar ; and wherein said bell crank actuating mechanism is configured such that: the actuation bell crank is attached to the slider link for rotation by the connector bar ; the connector bar is displaceable by the extension bell crank for aft motion of the slider link ; and the connector bar is displaceable by the retraction bell crank for forward motion of the slider link . the actuation bell crank is attached to the slider link for rotation by the connector bar ; the connector bar is displaceable by the extension bell crank for aft motion of the slider link ; and the connector bar is displaceable by the retraction bell crank for forward motion of the slider link . <EOS>