When does the CAS provide visual and aural alerts?

The CAS, or Crew Alerting System, provides visual and aural alerts specifically when a malfunction is detected that falls within the red or amber categories. These alerts are crucial for ensuring that pilots are immediately aware of any significant issues that could affect the safety and operation of the aircraft.

A red CAS alert indicates a critical failure that requires immediate attention, while an amber alert suggests a less critical issue but still necessitates action or awareness from the flight crew. The system is designed to prioritize safety by ensuring that the most serious conditions are communicated immediately, allowing for swift decision-making and corrective action by the pilots.

In contrast, other scenarios such as a green CAS malfunction or the absence of detected malfunctions do not warrant such alerts. Green indicates normal operation, and routine system checks typically do not require immediate alerts since they pertain to regular monitoring processes rather than malfunctions.