General Aircraft Practice Test 2026 – Complete Prep Resource

When a passenger in the lavatory initiates a call, an amber light is illuminated on the master call panel and at the outside lavatory door, and a chime sounds over the cabin PA. This combination quickly alerts the cabin crew to a lavatory request and indicates where to respond. The outside lavatory door has a reset button; once a crew member attends the lavatory, they press that reset to acknowledge the call and extinguish the amber light. This signaling helps ensure prompt, location-specific service and keeps the crew informed even if they can’t see the indicator at a glance.