If hydraulic systems 2 and 3 fail, what complication is expected during landing?

If hydraulic systems 2 and 3 fail, what complication is expected during landing?

• A. Nose Landing Gear will not extend for landing
• B. Nose Landing Gear will extend normally
• C. Main gear will not extend
• D. Nose gear will retract unexpectedly

Answer: (A)

The key idea is that landing gear extension relies on hydraulic power from independent circuits to push the gear out. For the nose gear, a specific pair of hydraulic circuits provides the actuation. If both of those circuits fail, there’s no pressure to the nose gear actuators, so the nose gear cannot extend during landing. The main gear can still extend if other hydraulic circuits are working, which is why the failure described leads to the nose gear not extending rather than the whole gear system failing. So, the expected complication is that the nose landing gear will not extend for landing.

The key idea is that landing gear extension relies on hydraulic power from independent circuits to push the gear out. For the nose gear, a specific pair of hydraulic circuits provides the actuation. If both of those circuits fail, there’s no pressure to the nose gear actuators, so the nose gear cannot extend during landing. The main gear can still extend if other hydraulic circuits are working, which is why the failure described leads to the nose gear not extending rather than the whole gear system failing.

So, the expected complication is that the nose landing gear will not extend for landing.