| 摘要 |
A plurality of actuators (11a, 11b) operate as a result of pressure oil being supplied thereto from a aircraft central hydraulic power source 104, and drive one control surface 103a. A backup hydraulic pump 18 is installed inside a wing 102a on which a control surface 103a is provided, and is provided so as to be able to supply the pressure oil to the actuators (11a, 11b) if a loss or degradation of the function of a hydraulic power source 104 has occurred. To the actuators (11a, 11b) for driving the one control surface 103a, the pressure oil is supplied from the same aircraft central hydraulic power source 104. The one backup hydraulic pump 18 supplies the pressure oil to the actuators (11a, 11b) for driving the one control surface 103a.
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