What is the purpose of the Emergency Lighting System (ELS)?

What is the purpose of the Emergency Lighting System (ELS)?

• A. It provides directions to locate the exits and illuminates the pathway.
• B. It powers the aircraft engines in emergencies.
• C. It releases oxygen masks automatically.
• D. It communicates with air traffic control

Answer: (A)

The Emergency Lighting System is designed to keep people oriented and safe during an emergency by lighting the exits and the route to them. It ensures exit signs stay visible and the floor or pathway lighting is on, so passengers can quickly locate and move toward an exit even if power is lost or visibility is poor. It usually runs on its own emergency power supply, so it remains functional when the main electrical system fails. This is why the best answer highlights guiding to exits and illuminating the way. The other functions— powering engines, releasing oxygen masks, or communicating with air traffic control—are performed by different systems and responsibilities.

The Emergency Lighting System is designed to keep people oriented and safe during an emergency by lighting the exits and the route to them. It ensures exit signs stay visible and the floor or pathway lighting is on, so passengers can quickly locate and move toward an exit even if power is lost or visibility is poor. It usually runs on its own emergency power supply, so it remains functional when the main electrical system fails. This is why the best answer highlights guiding to exits and illuminating the way. The other functions— powering engines, releasing oxygen masks, or communicating with air traffic control—are performed by different systems and responsibilities.