What is required just prior to boarding the aircraft?

The final walk-around the aircraft is essential just prior to boarding because it involves a thorough inspection of the exterior of the aircraft to ensure it is safe and ready for flight. This inspection typically includes checking for any visible defects, assessing fuel levels, and ensuring that all doors and hatches are secure. The walk-around is a critical part of pre-flight procedures, making it a key component in preventing potential issues during the flight.

Conducting the final walk-around helps to identify any discrepancies that may affect the safety or performance of the aircraft, thereby safeguarding both the crew and passengers. It serves as a final check to confirm that all systems appear to be functioning correctly before boarding begins.

Other options, while important in their own right, are not typically performed immediately prior to boarding. For instance, flight plan verification generally occurs prior to the final walk-around and is part of pre-flight planning to ensure the flight route and required information are accurate. Emergency drills and passenger confirmation processes are also crucial but happen in different contexts during the flight preparation process.