The problem focused on this thesis is to minimize the fairing drag of dropped-hinge trailing edge flap mechanism of an aircraft. The background knowledge and literature review about the trailing edge flaps and mechanisms are presented, and two patents are examined. Accordingly, a parametric model for a double circular slotted arc track mechanism with a screw jack drive for a trailing edge flap is presented. This model is used in the kinetostatic design methodology. The methodology is applied for a small aircraft as a case study. The main novelty of this thesis is these model and methodology. According to the results, motor torque requirement for the screw jack is determined. The fairing depth is considerably reduced compared to a dropped hinge type mechanism. Keywords: Fairing Size, Trailing Edge Flaps, High Lift Devices, Circular Arc Track Mechanism, Remote Center of Motion