1-52) The control surface is placed on balancing mandrels within a draft-free room. If moment arm exceeds the manufacturer's specifications, weight is added or removed from the control surface so that the balance beam weight falls within the manufacturer's specified range. Hind points are on the mandrels allowing control surface to pivot freely without dragging or binding.īalance beam or jig is used to determine the moment arm required to balance the control surface. Trim tab assemblies, for example, are usually installed along with mounting hardware and actuating assemblies such as toque uves or chain sprockets.Ĭontrol surface is placed on balancing mandrels within a draft-free room. Typical checks involve verifying that the static weight condition of the component balances within a specified range.īalance check is done with the control surface removed from the aircraft and assembled as specified by the manufacturer instructionĪll control surface should be installed in their relative position. Airframe manufacture provides detailed information for the balancing procedure, and may also offer special balancing tools and equipments.
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