Which transfer valves are controlled by the low level sensor in the left wing inner tank?

Which transfer valves are controlled by the low level sensor in the left wing inner tank?

• A. The left wing inner tank valve only
• B. One transfer valve in the left wing and one transfer valve in the right wing
• C. The center tank valve
• D. All transfer valves

Answer: (B)

Fuel balance is managed by transferring center-tank fuel to the wing tanks when a wing inner tank is running low. The left inner tank low-level sensor triggers the automatic transfer valves that feed fuel into the wing inner tanks from the center tank. It does this through one transfer valve in the left wing and a corresponding transfer valve in the right wing, ensuring both inner tanks receive fuel to restore balance. The center tank valve itself is not directly controlled by this sensor; the action here is the two transfer valves, one in each wing, opening to move center-tank fuel to the inner tanks.

Fuel balance is managed by transferring center-tank fuel to the wing tanks when a wing inner tank is running low. The left inner tank low-level sensor triggers the automatic transfer valves that feed fuel into the wing inner tanks from the center tank. It does this through one transfer valve in the left wing and a corresponding transfer valve in the right wing, ensuring both inner tanks receive fuel to restore balance. The center tank valve itself is not directly controlled by this sensor; the action here is the two transfer valves, one in each wing, opening to move center-tank fuel to the inner tanks.