What is the purpose of a Maintenance Data System (MDS) and what data should it capture?

• A. To log only equipment serial numbers.
• B. To store, track, and retrieve maintenance information; captures work orders, parts, labor, times, certifications, and history.
• C. To monitor social media feedback about maintenance.
• D. To track vendor payment terms.

Answer: (B)

A Maintenance Data System centralizes all maintenance information so you can plan, execute, and verify work effectively and use the data to improve reliability and costs over time. The data it captures should include the elements that show what was done, with what resources, and what happened as a result. Specifically, recording work orders explains what tasks are needed and their priority; parts tracked ensures inventory control and cost visibility; labor data shows who performed the work and how long it took; times give scheduling visibility and metrics like repair duration; certifications verify that technicians are qualified to perform the tasks and help with regulatory compliance; and history provides a complete trail of past maintenance, failures, and outcomes for analysis and audits. This combination supports planning, budgeting, trend analysis, root-cause investigations, and continuous improvement, while other items like social media feedback or vendor payment terms fall outside the maintenance data system’s primary purpose.