Which events will cause Emergency Lights to activate?

Which events will cause Emergency Lights to activate?

• A. Only PAX SAFETY
• B. PAX SAFETY, >5G impact, and loss of power
• C. Only loss of power
• D. All three are required simultaneously with cabin altitude increase

Answer: (B)

Emergency lighting is designed to come on whenever the cabin needs guidance to evacuate or move safely under an emergency. In this airplane, the lights will activate if any of these situations occurs: a PAX SAFETY event, a severe impact greater than 5 G, or a loss of electrical power. Each of these conditions creates a need for clear illumination of exits and pathways, so the system is engineered to respond to any one of them. Loss of power triggers emergency lighting because the lights are supplied by an independent emergency power source to ensure continued visibility for evacuation. A high-G impact prompts the lighting to help passengers and crew navigate the cabin amid potential debris or disarray. A PAX SAFETY event signals a scenario requiring immediate, well-lit egress. There’s no requirement to have cabin altitude increase for the lights to come on, so activating the system doesn’t depend on altitude changes.

Emergency lighting is designed to come on whenever the cabin needs guidance to evacuate or move safely under an emergency. In this airplane, the lights will activate if any of these situations occurs: a PAX SAFETY event, a severe impact greater than 5 G, or a loss of electrical power. Each of these conditions creates a need for clear illumination of exits and pathways, so the system is engineered to respond to any one of them.

Loss of power triggers emergency lighting because the lights are supplied by an independent emergency power source to ensure continued visibility for evacuation. A high-G impact prompts the lighting to help passengers and crew navigate the cabin amid potential debris or disarray. A PAX SAFETY event signals a scenario requiring immediate, well-lit egress. There’s no requirement to have cabin altitude increase for the lights to come on, so activating the system doesn’t depend on altitude changes.