For a flight departure, when should the final preflight walk-through be completed?

For a flight departure, when should the final preflight walk-through be completed?

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

Answer: (A)

The timing of a final preflight walk-through is about making sure the aircraft is ready for safety-critical operations before anyone boards. Doing this check before passengers begin boarding allows the crew to verify exterior surfaces, doors and slides, escape routes, emergency equipment, and general exterior condition without people in the way. It also gives time to address any issues with ground personnel before pushback and boarding start, preventing delays once passengers are already at the gate.

If the walk-through happened after boarding has begun or during boarding, it would interrupt the boarding process and create distractions and potential safety hazards at the door area. If it were done after engine start, any discovered issues could cause delays after the aircraft is already in the process of preparing for departure. So, the safest and most efficient choice is to complete the final preflight walk-through before boarding begins.