<Li> Red: Warning, this systems condition is critical and requires immediate attention (such as an engine fire, hydraulic pump failure) </Li> <Li> Amber: Caution, this system requires timely attention or may do so in the future (ice detected, fuel imbalance) </Li> <Li> Green: Advisory / Indication, a system is in use or ready for operation (such as landing gear down and locked, APU operating) </Li> <Li> White / blue: Advisory / Indication, a system is in use (seatbelt signs on, anti-ice system in - use, landing lights on) </Li>

Where is the annunciator panel usually located in a building