What action does the auto balance system take if a fuel imbalance of 20 pounds or more is detected for more than 30 seconds?

The auto balance system is designed to maintain an appropriate fuel distribution across the tanks. When it detects a fuel imbalance of 20 pounds or more for a duration exceeding 30 seconds, it responds by stopping the fuel transfer from the light tank to the collector tank. This action is crucial as it prevents further exacerbation of the imbalance, helping to stabilize the aircraft’s fuel distribution. By halting the transfer, the system ensures that the imbalance does not become more severe, which is essential for safe flight operations and maintaining the aircraft's center of gravity.