Mean Time To Repair (MTTR) is a key performance metric used in maintenance and reliability engineering. It measures the average time taken to repair a system or component after a failure occurs. This includes the time spent diagnosing the issue, obtaining necessary parts, and completing the repair. MTTR is important for organizations as it helps assess the efficiency of their maintenance processes. A lower MTTR indicates quicker repairs, leading to reduced downtime and improved operational performance. By analyzing MTTR, companies can identify areas for improvement in their maintenance strategies and enhance overall reliability.