Which system is primarily responsible for hydraulic pump operation in aircraft?

The hydraulic pump operation in aircraft is primarily classified under the electro-hydraulic system due to the integration of electrical components that control hydraulic actions. This system uses electrical power to control mechanical components, which in turn operate the hydraulic pumps. The electro-hydraulic system allows for efficient and effective control of hydraulic functions, such as landing gear operation, wing flap movement, and other critical systems that rely on hydraulic pressure.

While the electrical system provides the power and control signals necessary for operation, it is the electro-hydraulic system that combines these electrical controls with hydraulic power to achieve the desired mechanical movements. Understanding this integration is crucial for safety and operation in aviation, as it highlights the complexity and interconnectivity of different systems within an aircraft.