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. A lower MTTR indicates a more efficient repair process, which can lead to increased system availability. MTTR is often used in industries such as manufacturing, IT, and telecommunications to assess the effectiveness of maintenance strategies. By analyzing MTTR, organizations can identify areas for improvement, reduce downtime, and enhance overall operational efficiency.