Identify the PMU assigned to engines in aircraft systems.

The correct answer indicates that PMU-72 is responsible for managing engines in aircraft systems. The Power Management Unit (PMU) plays a crucial role at the system level, particularly in monitoring and controlling engine performance. It is designed to optimize engine operation by incorporating various functionalities such as fuel scheduling, ignition timing, and overall power output management.

In this case, PMU-72 is specifically designated for these tasks, ensuring that the engines operate efficiently and safely under various flight conditions. Understanding the specific PMU assigned to aircraft engines is critical for maintenance personnel and flight crews because it aids in troubleshooting and optimizing performance, aligning with standard operating procedures and best practices. This knowledge directly influences aircraft reliability and safety during operations.

The other options reference different PMUs, but only PMU-72 encompasses the functions and responsibilities outlined for engine management in aircraft systems, which highlights its importance in aviation operations.