When a flight attendant call button is activated, which system is affected?

When a flight attendant call button is activated, the affected systems include both the ACP (Audio Control Panel) and the AIP (Attendant Indication Panel).

When a passenger presses the call button, a signal is sent to the ACP, which allows the flight attendants to be notified that a call has been made from a specific area, typically indicating that assistance is required. The AIP then provides a visual cue, illuminating a light that shows which passenger or area has initiated the call. This coordinated system ensures that flight attendants can respond promptly to passenger needs, enhancing the service and safety provided onboard.

The other systems listed do not specifically respond to the activation of the flight attendant call button. For example, while cabin lighting may be adjusted by the crew during service, it is not directly tied to the call button activation. Similarly, the intercom system is used for communication but does not directly indicate a call for assistive service from passengers. The emergency lighting system is entirely separate and is activated only in specific emergency situations, not through passenger call buttons.