What happens if the upper ECAM screen fails?

When the upper ECAM screen fails, the E/WD (Engine/Warnings Display) data automatically transfers to the SD (System Display). This is crucial for maintaining awareness of vital aircraft information and alerts. The SD provides an alternative display location for the same data that would usually appear on the upper ECAM, ensuring that the flight crew can still monitor critical engine data and warnings despite the screen failure.

The system is designed to enhance safety and operational integrity, allowing pilots to focus on flying the aircraft without losing access to important information even when one of the displays fails. Additionally, while there are other display systems on the aircraft, only the SD is designated for this specific function when the upper ECAM is not operational.