If the upper DU brightness is off, how can you access an SD page?

If the upper DU brightness is off, how can you access an SD page?

• A. Press and hold the SD page button on the ECAM control panel, or press the ND XFR pushbutton
• B. Use a direct MCDU command
• C. Press the lower DU brightness knob
• D. Wait for automatic transfer

Answer: (A)

SD pages can be accessed even when the upper display is off by using the ECAM controls or the display-transfer control. The SD page button on the ECAM control panel directly calls up the System Display pages, and holding it ensures the SD content appears on the active display. An alternative is the ND XFR pushbutton, which transfers the navigation display to the ECAM, providing access to the SD information despite the upper DU being unlit. The other options don’t cause the SD content to appear: a direct MCDU command isn’t how SD pages are selected, turning the brightness knob doesn’t switch pages, and waiting for an automatic transfer isn’t a reliable method.

SD pages can be accessed even when the upper display is off by using the ECAM controls or the display-transfer control. The SD page button on the ECAM control panel directly calls up the System Display pages, and holding it ensures the SD content appears on the active display. An alternative is the ND XFR pushbutton, which transfers the navigation display to the ECAM, providing access to the SD information despite the upper DU being unlit. The other options don’t cause the SD content to appear: a direct MCDU command isn’t how SD pages are selected, turning the brightness knob doesn’t switch pages, and waiting for an automatic transfer isn’t a reliable method.