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

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 main idea is timing the exterior safety check so the aircraft is confirmed safe before passengers are involved. This final preflight walk-around is a thorough exterior check of the aircraft to verify things like doors and latches are secure, no obvious damage or fluid leaks, tires and gear appear sound, and there are no hazards around the aircraft or obstructions in critical areas. Completing it before boarding begins ensures any discrepancies can be handled without delaying passengers or exposing them to risk, and it allows the crew to proceed with boarding and pushback with confidence. Doing it after boarding begins would disrupt passengers and crew movement and could miss or delay addressing issues. Starting engines with unresolved exterior concerns would be unsafe, so the walk-around is finished before boarding starts.

The main idea is timing the exterior safety check so the aircraft is confirmed safe before passengers are involved. This final preflight walk-around is a thorough exterior check of the aircraft to verify things like doors and latches are secure, no obvious damage or fluid leaks, tires and gear appear sound, and there are no hazards around the aircraft or obstructions in critical areas. Completing it before boarding begins ensures any discrepancies can be handled without delaying passengers or exposing them to risk, and it allows the crew to proceed with boarding and pushback with confidence.

Doing it after boarding begins would disrupt passengers and crew movement and could miss or delay addressing issues. Starting engines with unresolved exterior concerns would be unsafe, so the walk-around is finished before boarding starts.