What is the fuel limit difference in LCD segments for the Auto-Balance System to activate?

The fuel limit difference for the Auto-Balance System in the Pilatus PC-12 NG is designed to ensure optimal performance and safety. When the system detects a fuel imbalance of 2-3 LCD segments, it activates the fuel balancing mechanism. This level of discrepancy is critical because it allows for timely corrective actions without letting the imbalance grow too large, which could impact aircraft handling and performance.

This range is specifically calibrated to balance the fuel loads effectively while minimizing unnecessary disruptions during flight operations. Activating the Auto-Balance System at this threshold helps maintain an even fuel load across both tanks, contributing to better weight distribution and overall aircraft stability. Hence, the choice of 2-3 LCD segments accurately reflects the intended design of the system.