To prevent unauthorized access to the aircraft from inside the terminal building, cabin crew must:

To prevent unauthorized access to the aircraft from inside the terminal building, cabin crew must:

• A. Close and lock all bridge doors behind them
• B. Open and close bridge doors as needed
• C. Lock only the forward door
• D. Do nothing

Answer: (A)

Security during boarding relies on keeping the access point between the terminal and the aircraft sealed after crew pass through. Closing and locking all bridge doors behind them creates a secure barrier, so no one in the terminal can enter the aircraft unless proper procedures and access controls are followed. Leaving doors open or only securing a single door would leave routes for unauthorized entry, and doing nothing would ignore this essential security step. This action ensures the aircraft remains secure throughout the boarding process.

Security during boarding relies on keeping the access point between the terminal and the aircraft sealed after crew pass through. Closing and locking all bridge doors behind them creates a secure barrier, so no one in the terminal can enter the aircraft unless proper procedures and access controls are followed. Leaving doors open or only securing a single door would leave routes for unauthorized entry, and doing nothing would ignore this essential security step. This action ensures the aircraft remains secure throughout the boarding process.