Dynamic Deflection - Download/Source The control authority a plane needs from it's control surfaces may vary over the length of a flight. At low altitude or high speed, the deflection we have may be too high causing excessive G loadings, but we can't reduce it because at higher altitudes we need all of that deflection to keep the nose pointing forwards. Currently, the tools we have for this problem focus on changing input scale (fine control, FAR's dynamic control authority (DCA) helper, et