What critical information do you lose when the ECU fails?

When the Engine Control Unit (ECU) fails, it has a significant impact on various operational parameters of a gas turbine system. The critical information lost primarily includes the Digital Display Indicator (DDI) indication.

The DDI serves as a crucial interface that provides real-time data on the engine's performance, including critical parameters necessary for safe operation and monitoring. If the ECU fails, the DDI would not receive the necessary data to present accurate readings, making it impossible to interpret the current state of the turbine. This loss of indication means operators cannot monitor performance trends, diagnose issues, or make informed decisions regarding the turbine's operation. Thus, the failure of the ECU directly affects the ability to gauge engine status through the DDI.

While other options like pump pressure indication, control valve status, and fuel flow rate are important, they are typically monitored by different systems or can be assessed through alternative means, making them less critical in terms of immediate loss of data from an ECU failure perspective. The DDI's role in providing a centralized view of critical information encompasses a broader range of operational feedback, solidifying its importance when the ECU is compromised.