AC313A is a civil transport helicopter with international advanced level jointly developed by AVIC and ChangFei. On the basis of AC313, AC313A improved the power transmission capacity and reliability of the transmission system. It also optimized the aerodynamic shape and upgraded the avionics, hydraulic, MCS, FCS, BAS. It can perform multiple tasks under different conditions through the additional deicing/anti-icing of rotor and the optional rescue electric with fire bucket and other equipment. On the plateau, the maximum takeoff weight of AC313A is 11.5t, the maximum payload is 1.3t and the maximum range is 600km.