Which system is typically used for monitoring the engine performance in turbine engines?

The powerplant monitoring system is the primary system used for evaluating and analyzing the performance of turbine engines. This system collects and processes various parameters such as temperature, pressure, and RPM, enabling operators and engineers to assess the engine's health and performance in real-time. By utilizing a centralized monitoring system, anomalies and performance issues can be detected early, facilitating timely maintenance and operational decisions.

In addition, the powerplant monitoring system often integrates with other subsystems to gather a comprehensive overview of the engine’s operating conditions, ensuring that performance metrics align with safety and efficiency standards. This functionality is crucial for safe flight operations and for meeting regulatory requirements.

While other systems, such as the engine data recorder, also play significant roles in monitoring engine performance, they are generally geared towards data collection for analysis after flight rather than real-time monitoring. Options such as the fuel management system and temperature control system focus on specific functions rather than providing a holistic view of engine performance, which is why they are not the most suitable answers for this question.