Which timing best describes when the final preflight walk-through must be finished?

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

Answer: (B)

The final preflight walk-through should be finished before boarding begins. This timing allows you to verify both exterior and interior readiness without passengers on board, confirming that exits, doors, and safety equipment are in place and functioning, the cabin is secure and free of hazards, and no items are left unsecured. Completing the check before boarding ensures any issues can be corrected without delaying passengers or creating distractions once boarding has started, and it keeps the boarding and departure sequence running smoothly. Waiting until after boarding or after engine start would disrupt safety procedures and could delay or complicate the flight.