Which is not activated by Emergency Light Switch?

• A. Emergency Lighting
• B. Emergency Signaling System
• C. Cabin Signage
• D. Exterior Lighting

Answer: (B)

The main idea here is what the Emergency Light Switch actually powers. This switch is used to energize the cabin’s emergency lighting system, which ensures visibility during a power loss or evacuation. When activated, it lights the interior emergency lights and exit signage so passengers and crew can clearly see the exits and follow the escape path. It also typically powers cabin signage that must remain illuminated during an emergency.

This switch does not engage the Emergency Signaling System, which is a separate function used for crew signaling and alert procedures. Exterior lighting is governed by its own circuits and controls outside the cabin emergency lighting system, so it isn’t driven by the Emergency Light Switch either.