This is schedule-based maintenance. Which type is described?

• A. Run-to-Failure Maintenance
• B. Planned Maintenance
• C. Preventive Maintenance
• D. Predictive Maintenance

Answer: (C)

Schedule-based maintenance means performing maintenance at fixed intervals, like calendar dates or usage hours, to prevent problems before they happen. That approach is preventive maintenance because the actions are done proactively to avoid failures, rather than reacting after one occurs.

This differs from run-to-failure, where maintenance happens only after a component breaks. Predictive maintenance relies on condition data and trend analysis to forecast when maintenance will be needed, rather than sticking to a fixed schedule. Planned maintenance involves organizing and planning work, which can include preventive tasks, but the description of being driven by a schedule points most directly to preventive maintenance.