Before passengers start boarding, what is the proper time to complete the final preflight walk-through?

• A. After engine start
• B. During boarding
• C. Before boarding begins
• D. After boarding begins

Answer: (C)

The final preflight walk-through is the last safety check you perform to confirm the aircraft is ready for departure before anyone steps onto the airplane. It verifies exterior and interior conditions, that doors and slides are in the correct state, no hazards or loose items are present, and that there have been no changes since the earlier preflight checks. Doing this before boarding begins ensures any issues can be addressed while the aircraft is still unoccupied, preventing delays once passengers are boarding. If this check were done after engine start or during boarding, it could cause safety concerns or disruptions and wouldn’t guarantee the aircraft is fully ready for passengers.