Which device is used to communicate on an aircraft?

Which device is used to communicate on an aircraft?

• A. Interphone, PA, Indicator lights
• B. Emergency alarm only
• C. Sign language only
• D. Siren and bells only

Answer: (A)

Communication on an aircraft relies on a system that connects cockpit and cabin and allows announcements to passengers. The interphone is the link between crew members, letting pilots and cabin crew talk directly to each other. The public address (PA) system is used to address passengers, from quick updates to full announcements for the entire cabin or specific zones. Indicator lights provide a visual cue when someone in the cabin needs assistance or when a crew signal is active, helping the crew respond quickly even if sound isn’t heard. These elements together support everyday operations, passenger service, and coordination during emergencies. Relying only on an emergency alarm, or only on sign language, or only on bells wouldn’t provide the complete, reliable means of communication needed throughout a flight.

Communication on an aircraft relies on a system that connects cockpit and cabin and allows announcements to passengers. The interphone is the link between crew members, letting pilots and cabin crew talk directly to each other. The public address (PA) system is used to address passengers, from quick updates to full announcements for the entire cabin or specific zones. Indicator lights provide a visual cue when someone in the cabin needs assistance or when a crew signal is active, helping the crew respond quickly even if sound isn’t heard.

These elements together support everyday operations, passenger service, and coordination during emergencies. Relying only on an emergency alarm, or only on sign language, or only on bells wouldn’t provide the complete, reliable means of communication needed throughout a flight.