How long do Emergency Lights last on B737-700 (73G)?

How long do Emergency Lights last on B737-700 (73G)?

• A. 5 minutes
• B. 20 minutes
• C. 2 minutes
• D. It lasts for 10 minutes

Answer: (D)

Emergency lighting must stay lit long enough to guide everyone to exits after a power loss. On the B737‑700, the system is battery-powered and automatically activates if cabin power fails, providing illumination for ten minutes. This duration ensures passengers can evacuate safely even in a worst‑case scenario. The other options don’t fit the aircraft’s standard design: five and two minutes would be insufficient to meet the required safety margin, while twenty minutes goes beyond the typical specification for this system. So, ten minutes is the correct duration for emergency lights on this airplane.

Emergency lighting must stay lit long enough to guide everyone to exits after a power loss. On the B737‑700, the system is battery-powered and automatically activates if cabin power fails, providing illumination for ten minutes. This duration ensures passengers can evacuate safely even in a worst‑case scenario. The other options don’t fit the aircraft’s standard design: five and two minutes would be insufficient to meet the required safety margin, while twenty minutes goes beyond the typical specification for this system. So, ten minutes is the correct duration for emergency lights on this airplane.