AMC 25.393(a) Loads parallel to hinge line

• ED Decision 2003/2/RM found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

AMC 25.393(a) Loads parallel to hinge line ED Decision 2003/2/RM The loads parallel to the hinge line on primary control surfaces and other movable surfaces, such as tabs, spoilers, speedbrakes, flaps, slats and all-moving tailplanes, should take account of axial play between the surface and its supporting structure in complying with [CS 25.393(a)](#_DxCrossRefBm1709820985). For the rational analysis, the critical airframe acceleration time history in the direction of the hinge line from all flight and ground design conditions (except the emergency landing conditions of [CS 25.561](#_DxCrossRefBm1709820989)) should be considered. The play assumed in the control surface supporting structure, should include the maximum tolerable nominal play and the effects of wear.