When does the FAP automatically appear?

The Frontier Aircraft FAP, or Flight Attendant Panel, automatically appears when it is triggered by smoke detection. This feature is critical for cabin crew response in the event of an emergency. When smoke is detected in areas such as the cabin or lavatories, the system activates alarms and alerts the flight attendants to ensure they can promptly address the situation or execute safety protocols. This automatic appearance allows for immediate awareness and action, enhancing passenger safety during critical moments.

The other scenarios involve routine operations rather than emergency responses. For instance, system startup, cabin pressure changes, and pre-flight checks do not necessitate the immediate visual indication of potential danger that smoke detection does. The FAP's operation is primarily about the safety and quick response in emergencies, making the smoke detection trigger its most critical function.