During a visual approach, what is the recommended practice for using the multi-function display (MFD)?

The recommended practice for using the multi-function display (MFD) during a visual approach is to adjust it to the lowest scale that shows the destination airport. Setting the MFD to the lowest appropriate scale allows pilots to have a detailed and focused view of the area surrounding the destination. This level of detail is crucial for visual approaches because it enhances situational awareness, helping to identify landmarks, the runway, and any potential obstacles in the surrounding environment.

By displaying the area in greater detail, pilots can make more informed decisions during the approach phase. This practice promotes a higher awareness of flight path, spatial orientation, and proximity to the airport environment.

In contrast, using the highest scale available would provide a broader but less detailed view, which may not be helpful when precision and situational awareness are critical. Using the MFD only when necessary could lead to missed opportunities to enhance situational awareness during the visual approach. Turning off the MFD altogether, especially during turbulence, would restrict access to valuable information that can assist in maintaining control and awareness of the aircraft's position relative to the environment. Therefore, the best practice is to adjust the MFD to the lowest scale that includes the destination airport, maximizing situational awareness during the critical phase of the approach.