General Authority of Civil Aviation (GACA) Aeronautical Information Publication (AIP) Practice Exam

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Which hydraulic system is responsible for the landing gear operation?

A hydraulic system B
The C hydraulic system
The R hydraulic system
The primary hydraulic system only

The correct answer is: The C hydraulic system

The hydraulic system responsible for the landing gear operation is typically the C hydraulic system. This specific system is designed to handle the demands of operating the landing gear due to factors such as the required pressure and fluid capacity to ensure reliable deployment and retraction of the landing gear during different phases of flight. Aircraft are often equipped with multiple hydraulic systems for redundancy and to distribute the workload among them. While the primary hydraulic system may manage essential functions like flight control surfaces, the specialized C hydraulic system is designated for landing gear operation. Its design ensures that even if other hydraulic systems face issues, the landing gear can still function correctly, contributing to the overall safety and reliability of the aircraft's operation. The other choices pertain to different hydraulic systems that could be responsible for various secondary systems such as brakes, flaps, or other mechanisms but typically do not handle landing gear operations as designated for the C hydraulic system.