Which statement correctly describes the duration of emergency features on the CRJ 700?

Which statement correctly describes the duration of emergency features on the CRJ 700?

• A. Emergency lights last 20 minutes
• B. Emergency lights last 30 minutes
• C. Emergency lights last 15 minutes
• D. Emergency lights last 40 minutes

Answer: (A)

Emergency features are designed to keep critical lighting alive long enough for a safe evacuation if normal electrical power fails. On the CRJ 700, the emergency lighting system is powered by dedicated battery packs that automatically activate when main power is lost. The system is specified to illuminate for 20 minutes, giving passengers and crew enough time to find exits, see aisle paths, and reach exits despite the loss of cockpit and cabin power. Longer durations would require heavier, larger battery capacity, while shorter durations could compromise evacuation safety; 20 minutes strikes the balance for this aircraft.

Emergency features are designed to keep critical lighting alive long enough for a safe evacuation if normal electrical power fails. On the CRJ 700, the emergency lighting system is powered by dedicated battery packs that automatically activate when main power is lost. The system is specified to illuminate for 20 minutes, giving passengers and crew enough time to find exits, see aisle paths, and reach exits despite the loss of cockpit and cabin power. Longer durations would require heavier, larger battery capacity, while shorter durations could compromise evacuation safety; 20 minutes strikes the balance for this aircraft.