How should you communicate a serious issue like a fight in the cabin?

Communicating a serious issue, such as a fight in the cabin, necessitates immediate and clear notification to ensure the safety of all passengers and crew members. The standard protocol for alerting crew members about significant incidents is through the use of four high-low chimes. This specific auditory signal is designed to capture attention quickly and convey the urgency of the situation without causing panic.

Using verbal communication or written messages may not be as effective in this context, as they can cause delays in response time. A highlight in a flight booklet also does not provide the immediacy required during a crisis. Therefore, four high-low chimes serve as a crucial and efficient method for alerting the crew to take necessary action swiftly.