Aircraft actuator hydraulic system

An aircraft actuator hydraulic system that has a plurality of hydraulically operated actuators for driving one or more control surfaces of an aircraft and supplies pressure oil to these actuators, comprising:

• the plurality of actuators operating as a result of the pressure oil being supplied thereto from one or more aircraft central hydraulic power sources installed in an airframe of the aircraft, and driving one of the control surfaces;
• and
• one or more backup hydraulic pumps each of which is installed inside a wing on which the control surface is provided and is able to supply the pressure oil to the actuators if a loss or degradation of a function of the one or more aircraft central hydraulic power sources has occurred,
• wherein the pressure oil is supplied from the same aircraft central hydraulic power source to the plurality of actuators that drive one of the control surfaces, and one of the backup hydraulic pumps supplies the pressure oil to the plurality of actuators that drive one of the control surfaces.