Aviation Computer Based Training (CBT) Practice 2026 - Free CBT Practice Questions and Study Guide

Engine-driven hydraulic pumps are typically located in their respective engine accessory gear boxes. This is because the accessory gearbox, which is a part of the engine, is specifically designed to house essential components and systems that need to be driven directly by the engine's power. By situating the hydraulic pumps here, they can efficiently convert engine mechanical energy into hydraulic energy for use in various aircraft systems, including flight controls, landing gear, and brakes.

The location in the accessory gear box also protects the pumps from external elements and vibration, ensuring reliability and optimal performance. This integration provides both efficiency in operation and maintains the compact design of the aircraft by minimizing the need for extended hydraulic lines that could be susceptible to leaks or damage.

The other options provided do not accurately reflect the typical placement of these hydraulic pumps within aircraft systems.