At what cabin pressure threshold does the amber CAS indicator activate?

The amber CAS (Crew Alerting System) indicator activates at a cabin pressure threshold of 6.0 psi or -0.15 psi. This indicates that the aircraft is experiencing an abnormal cabin pressure situation that requires attention from the crew. The specific pressure settings are critical for ensuring passenger safety and comfort, as well as proper aircraft operation within regulatory standards for pressurization.

At 6.0 psi, the system indicates a significant deviation from normal cabin pressure, which is essential for alerting the crew to take appropriate action. The additional reference to -0.15 psi signifies a lower limit alert, further emphasizing the importance of maintaining proper cabin pressure during flight. Understanding these thresholds helps pilots and crew members to respond effectively in the event of a discrepancy in cabin pressure, ensuring safety and compliance with operational standards.