Which action should be avoided to prevent smoke from entering the cabin?

Which action should be avoided to prevent smoke from entering the cabin?

• A. Opening the flight deck door
• B. Closing the flight deck door
• C. Keeping the door closed
• D. Opening all doors

Answer: (C)

The main idea is isolating the cockpit from the cabin to stop smoke from moving between areas. The flight deck door acts as a barrier, so keeping that door closed maintains a sealed separation. When the door stays shut, smoke has fewer paths to travel into the cabin, helping protect passengers and give the crew time to respond and ventilate safely. Opening the door creates a direct doorway for smoke to flow between compartments, and opening all doors would maximize the spread. Keeping the door closed is the protective action that best prevents smoke from entering the cabin.

The main idea is isolating the cockpit from the cabin to stop smoke from moving between areas. The flight deck door acts as a barrier, so keeping that door closed maintains a sealed separation. When the door stays shut, smoke has fewer paths to travel into the cabin, helping protect passengers and give the crew time to respond and ventilate safely. Opening the door creates a direct doorway for smoke to flow between compartments, and opening all doors would maximize the spread. Keeping the door closed is the protective action that best prevents smoke from entering the cabin.