What is the purpose of the 4 high low chimes in an emergency?

• A. To signal the pilot
• B. To indicate cabin service is ready
• C. To indicate doors are blocked
• D. To alert crew to sit down

Answer: (A)

The signal pattern being tested is about how crew signaling communicates urgency. Four high-low chimes are used to grab the pilots’ immediate attention, indicating that an emergency is in progress and action from the flight deck is required right away. This distinct, loud cue cuts through cabin noise and separates an emergency alert from routine calls, so the pilots know something critical needs their focus without delay.

Think of it as a rapid, escalation signal: cabin crew use it to prompt the flight deck to acknowledge the situation and initiate appropriate emergency procedures. It’s designed to be unambiguous and quickly understood, ensuring a coordinated response between the cabin and the cockpit.

The other signals described in the choices pertain to normal operations or non-emergency alerts, so they don’t capture the same sense of urgency or require immediate cockpit action.