How does aircraft ventilation affect smoke spread?

• A. Ventilation can move smoke along the cabin; managing airflow helps limit spread and improve visibility.
• B. Ventilation stops smoke completely.
• C. Ventilation has no effect on smoke.
• D. Ventilation always prevents smoke from spreading.

Answer: (B)

Ventilation determines how air moves through the cabin, which in turn controls where smoke travels. By directing airflow, you can push smoke toward exhaust outlets and away from occupants, while diluting its concentration to make visibility better for the crew. It’s a management tool to limit spread and improve detection and response, not a guarantee that all smoke will be removed or contained—smoke can still spread despite ventilation, depending on the fire’s size and the cabin’s airflow paths.