← Metrics Reference | Maintenance Phase 4

Planned Maintenance Compliance

Percentage of scheduled preventive maintenance tasks completed on time — the primary indicator of maintenance discipline and programme effectiveness.

Formula

(Completed PMs ÷ Scheduled PMs) × 100%

Benchmarks

World-class: >95% Good: 90–95% Typical: 80–90% Poor: <80%

What Is Planned Maintenance Compliance?

Planned Maintenance Compliance measures the percentage of scheduled preventive maintenance (PM) tasks that are completed within their planned window. It is the most direct indicator of maintenance discipline — whether the organisation follows through on its own maintenance programme.

The Formula

PM Compliance = (Completed PMs ÷ Scheduled PMs) × 100%

Track two dimensions:

  • Completion rate — how many scheduled PMs were actually done (vs skipped or deferred)
  • On-time rate — how many were completed within the scheduled window

Both matter. A PM completed two weeks late still counts as a missed window.

Data Requirements

SourceRequiredWhat You Need
CMMSYesMaintenance schedule, PM work orders, completion records

PM Compliance is a Phase 4 metric — it requires a functioning CMMS with a defined PM programme.

Why It Matters

  • Reliability — consistent PM execution prevents unplanned failures
  • Maintenance discipline — measures whether the programme is actually followed, not just documented
  • Cost efficiency — planned work is 3–5× cheaper than reactive work
  • Equipment longevity — proper maintenance extends equipment life

Common Pitfalls

  • Scheduling PMs that cannot realistically be completed (too many, too close together)
  • Counting deferred PMs as “rescheduled” rather than missed
  • Not tracking reasons for missed PMs — you need to know whether it was a capacity issue, parts shortage, or deprioritisation

Best Practices

  • Schedule PMs during planned downtime windows where possible
  • Track and categorise reasons for missed PMs
  • Validate PM intervals based on actual failure data — adjust frequencies where evidence supports it
  • Balance PM frequency against operational impact
  • Review compliance weekly to catch trends early