In Auto Cross Flow, the low tank will be filled until the difference between tanks is how many pounds?

In Auto Cross Flow, the low tank will be filled until the difference between tanks is how many pounds?

• A. 0
• B. 50
• C. 100
• D. 150

Answer: (B)

Auto Cross Flow is used to keep fuel distributed between the left and right wing tanks so the airplane’s weight and balance stay within safe limits. When one tank is lower, fuel is allowed to flow from the fuller tank to the lower one automatically. The system continues transferring until the difference between the two tank quantities is reduced to 50 pounds. This 50-pound threshold provides a practical balance: it quickly corrects most of the imbalance without overcorrecting and moving the center of gravity too far the other way. Once the difference reaches 50 pounds, the crossflow stops, keeping the tanks within a safe, stable range.

Auto Cross Flow is used to keep fuel distributed between the left and right wing tanks so the airplane’s weight and balance stay within safe limits. When one tank is lower, fuel is allowed to flow from the fuller tank to the lower one automatically. The system continues transferring until the difference between the two tank quantities is reduced to 50 pounds. This 50-pound threshold provides a practical balance: it quickly corrects most of the imbalance without overcorrecting and moving the center of gravity too far the other way. Once the difference reaches 50 pounds, the crossflow stops, keeping the tanks within a safe, stable range.