On a B787, which visual indicator illuminates when the lavatory smoke detector is activated?

On a B787, which visual indicator illuminates when the lavatory smoke detector is activated?

• A. Amber light on master call panel illuminates
• B. Customer call reset button outside lavatory door illuminates
• C. Forward Attendant Panel indicates "Smoke detected"
• D. CSCP/CACP indicates "Smoke detected"

Answer: (A)

When a lavatory smoke detector is activated on a 787, the crew is alerted by the amber light on the Master Call Panel. This amber indicator is the dedicated visual cue that signals a lavatory smoke condition to the cabin crew, allowing them to locate and address the source quickly. Other panels may display related messages, but the immediate, primary visual cue is the amber lamp on the Master Call Panel.

When a lavatory smoke detector is activated on a 787, the crew is alerted by the amber light on the Master Call Panel. This amber indicator is the dedicated visual cue that signals a lavatory smoke condition to the cabin crew, allowing them to locate and address the source quickly. Other panels may display related messages, but the immediate, primary visual cue is the amber lamp on the Master Call Panel.