What is the maximum allowed fuel imbalance before a caution message appears on the EICAS?

The maximum allowed fuel imbalance that triggers a caution message on the EICAS (Engine Indication and Crew Alerting System) is set at 794 pounds. This parameter is critical for maintaining aircraft stability and performance, as an imbalance can affect the aircraft's center of gravity during flight. When this imbalance reaches or exceeds 794 pounds, the system generates a caution alert to inform the flight crew, prompting them to take necessary actions to address the fuel distribution before it impacts safety or performance.

When interpreting such limits, it's important to recognize that operational procedures are designed to ensure safe handling of flight dynamics and that exceeding specified thresholds can lead to undesirable flight conditions. This understanding emphasizes the importance of monitoring fuel management throughout the flight to adhere to safety protocols effectively.