Final answer:
The expected outcome when EDS auto reversion logic is activated due to an EICAS failure is that the system will switch to a backup display mode, maintaining access to critical flight information for the crew.
Step-by-step explanation:
If the EDS auto reversion logic is activated when EICAS (Engine Indication and Crew Alerting System) fails, the expected outcome is that the system will automatically switch to a backup mode of operation. This is designed to ensure that critical engine and aircraft performance information remains available to the flight crew, despite the failure of the primary display system. The EDS (Electronic Display System) refers to the suite of screens and processors that generate the aircraft's display information, and the auto reversion logic is essentially a fail-safe mechanism.
Upon detecting a failure of the primary EICAS display, the reversion logic will typically redirect the display information to alternative screens, such as the captain's or first officer's primary flight displays. This permits continuous access to flight-critical information, maintaining the safety and operational capability of the aircraft. It's an integral part of the aircraft's overall redundancy system for avionics.