Which statement best indicates when the final preflight walk-through is completed?

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

Answer: (A)

The final preflight walk-through is the last exterior check done to confirm there are no safety hazards or maintenance issues visible on the aircraft before it carries passengers. It should be completed before boarding begins so any problems can be found and addressed without delaying passengers or compromising safety. If you wait until after boarding has started or after engine start, you risk delaying boarding, creating safety complications, and missing issues that should be resolved before the aircraft is occupied and powered up.