If hydraulic systems 2 and 3 are lost, how is the Main Landing Gear extended?

If hydraulic systems 2 and 3 are lost, how is the Main Landing Gear extended?

• A. Manual Gear Extension of the Main Gear
• B. Automatic Gear Extension by Hydraulic 1
• C. Nose Gear Extension Occurs
• D. Electrical Extension via PSEU

Answer: (A)

When trying to extend the Main Landing Gear, the system relies on hydraulic power, but an emergency path is built in that doesn’t depend on hydraulics at all. If hydraulic systems 2 and 3 are lost, there’s a mechanical, hydraulics-free manual gear extension available to lower the main gear. This ensures the aircraft can still deploy the MLG for landing even when multiple hydraulic circuits are unavailable. The other options don’t fit because relying on hydraulic power from system 1 for automatic extension isn’t guaranteed when two systems are out, the nose gear can’t extend the main gear, and electrical extension via the PSEU isn’t the method used to deploy the Main Landing Gear on this airplane.

When trying to extend the Main Landing Gear, the system relies on hydraulic power, but an emergency path is built in that doesn’t depend on hydraulics at all. If hydraulic systems 2 and 3 are lost, there’s a mechanical, hydraulics-free manual gear extension available to lower the main gear. This ensures the aircraft can still deploy the MLG for landing even when multiple hydraulic circuits are unavailable.

The other options don’t fit because relying on hydraulic power from system 1 for automatic extension isn’t guaranteed when two systems are out, the nose gear can’t extend the main gear, and electrical extension via the PSEU isn’t the method used to deploy the Main Landing Gear on this airplane.