How would a pilot confirm tower command if two-way radio or computer communications are unavailable?

In aviation, effective communication is crucial, especially when pilots are approaching an airport and need to establish their intentions with air traffic control. When two-way radio or computer communications are unavailable, pilots must rely on visual signals to communicate with the control tower.

Rocking the wings is a recognized visual signal that a pilot can use to indicate their intention to land or that they are in position to receive landing instructions. This method is particularly useful since it allows for clear communication even in the absence of radio contact. By rocking the wings, the pilot draws the attention of tower personnel and signals that they wish to confirm their next steps, whether it be landing or requesting clearance.

Other options, such as trying to land without confirmation or calling the tower using a mobile phone, may risk safety and do not align with standard aviation procedures. While hand signals might be used in certain situations, their effectiveness and recognition by tower personnel can vary greatly depending on visibility, distance, and traffic. Thus, rocking the wings stands out as a standardized and effective maneuver to ensure clarity and prompt a response, making it the correct answer in this scenario.