What does 'engine run-up' mean in aviation maintenance?

The term 'engine run-up' refers to a procedure where the engine is tested at various power settings to ensure it operates correctly and efficiently. During this process, maintenance personnel can evaluate the performance of the engine, checking for any abnormal vibrations, sounds, or readings on gauges that could indicate potential issues. By running the engine at different speeds, they assess the functionality of crucial components, such as ignition systems and fuel systems, allowing for early detection of problems that might require further attention or repair.

Understanding the importance of this procedure is essential for maintaining aircraft safety and performance. It serves as a crucial step in pre-flight checks and maintenance routines to guarantee the reliability of the aircraft's engine during flight operations.