What type of emergency escape path lights are found in the 717?

What type of emergency escape path lights are found in the 717?

• A. LED
• B. Photo-luminescent
• C. Neon
• D. Flashing lights

Answer: (B)

The correct answer is photo-luminescent lights, which are specifically designed to provide a reliable means of illumination in emergencies. These lights function without the need for an external power source and glow in low-light conditions, offering a critical visual cue for passengers and crew to safely evacuate the aircraft during an emergency.

Photo-luminescent systems absorb light during normal operation and then emit that light in dark conditions, making them particularly effective in the event of smoke or power failure. This enhances safety, as the glow is often visible even when other lighting systems may fail.

On the other hand, LED lights, while commonly used in many applications for efficiency and durability, rely on a power source and may not be as effective in emergency situations where power outages occur. Neon and flashing lights also do not meet the specific criteria for emergency escape path lighting, as neon typically requires a constant electrical supply and flashing lights might not provide the consistent illumination needed to guide evacuees effectively.