Which statement about emergency lights activation is correct?

Which statement about emergency lights activation is correct?

• A. The F/A switch can activate Emergency Lights only if the Emer light switch is ON
• B. The F/A switch cannot activate Emergency Lights
• C. The F/A switch can activate Emergency Lights regardless of Emer light switch position
• D. Emergency Lights activate automatically when the cabin is depressurized

Answer: (C)

In the A320, emergency lighting is designed to be controllable from more than one point so the cabin can be illuminated even if one control path fails. The Flight Attendant switch powers the cabin emergency lighting independently of the position of the dedicated Emer light switch. This means the cabin crew can activate the emergency lights to illuminate aisles and exits regardless of what the Emer light switch is doing in the cockpit, which is essential during an evacuation or loss of normal power. The Emer light switch mainly provides a master control for emergency lighting from the cockpit, but it isn’t the sole path to light the cabin. The ability of the Flight Attendant switch to energize the lights regardless of the Emer light switch position is the reason this statement is correct. Automatic activation due to depressurization isn’t how the system works, and the Flight Attendant switch does not require the Emer light switch to be ON to function.

In the A320, emergency lighting is designed to be controllable from more than one point so the cabin can be illuminated even if one control path fails. The Flight Attendant switch powers the cabin emergency lighting independently of the position of the dedicated Emer light switch. This means the cabin crew can activate the emergency lights to illuminate aisles and exits regardless of what the Emer light switch is doing in the cockpit, which is essential during an evacuation or loss of normal power.

The Emer light switch mainly provides a master control for emergency lighting from the cockpit, but it isn’t the sole path to light the cabin. The ability of the Flight Attendant switch to energize the lights regardless of the Emer light switch position is the reason this statement is correct. Automatic activation due to depressurization isn’t how the system works, and the Flight Attendant switch does not require the Emer light switch to be ON to function.