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

What function does the C hydraulic system provide?

1. Emergency landing gear retraction

2. Normal braking operation

3. Landing gear retraction and steering

4. Flap extension only

The correct answer is: Landing gear retraction and steering

The C hydraulic system is crucial for landing gear retraction and steering functions in aircraft. This system is specifically designed to operate the mechanisms that enable the landing gear to be deployed or retracted as necessary during flight maneuvers and landings. Additionally, steering during taxiing is also a critical function provided by the hydraulic system, allowing pilots to navigate the aircraft on the ground effectively. In contrast, the other options represent functions that are managed by different hydraulic systems or electrical systems. Emergency landing gear retraction typically involves different, often manually operated systems to ensure that the landing gear can be deployed even in hydraulic failure scenarios. Normal braking operations usually rely on a separate hydraulic system dedicated to controlling the brakes. Flap extension is similarly managed by a different hydraulic or electrical system, focused solely on controlling the deployment of the flaps for lift during takeoff and landing operations. Thus, the C hydraulic system’s role in landing gear retraction and steering is distinctly aligned with essential aircraft operations.