What does 'lockdown' mean on board?

What does 'lockdown' mean on board?

• A. The flight deck door remains open for quick access
• B. The flight deck door is closed, locked, bolted or barred; traffic between cabin and flight deck is suspended; no face-to-face communication between flight deck and cabin crew
• C. Only crew can use the interphone
• D. Lounge access is restricted

Answer: (B)

Lockdown is a security measure where the flight deck door is closed, locked, bolted or barred, and all traffic between the cabin and flight deck is suspended. There is no face-to-face communication between cabin crew and the flight deck, with any needed contact happening via the interphone. This setup prevents unauthorized entry and protects the crew and passengers during a security incident. The other options don’t capture the full procedure: leaving the door open would defeat lockdown, and restricting lounge access doesn’t address the flight deck barrier and communication separation.

Lockdown is a security measure where the flight deck door is closed, locked, bolted or barred, and all traffic between the cabin and flight deck is suspended. There is no face-to-face communication between cabin crew and the flight deck, with any needed contact happening via the interphone. This setup prevents unauthorized entry and protects the crew and passengers during a security incident. The other options don’t capture the full procedure: leaving the door open would defeat lockdown, and restricting lounge access doesn’t address the flight deck barrier and communication separation.