What Is Your Maintenance History Telling You?
Discover how analysing maintenance history helps identify failures, improve reliability, track KPIs and make better maintenance decisions.
Collecting accurate asset information and maintenance history is an important first step, but it's only when that information is analysed that it begins to deliver real value.
Every maintenance activity, inspection, breakdown and repair adds another piece to the picture. Over time, that information reveals trends, recurring issues and opportunities that might otherwise go unnoticed.
The challenge isn't collecting more information.
It's understanding what your maintenance history is trying to tell you.
Looking Beyond Individual Breakdowns
Most organisations investigate major failures when they occur, but the bigger opportunity often lies in looking at maintenance information as a whole.
When maintenance history is analysed over weeks, months or even years, patterns begin to emerge.
Questions such as these become much easier to answer:
Which assets fail most often?
Which failures have the greatest impact on the business or production?
Which equipment consumes the most maintenance resource?
Are the same repairs being carried out repeatedly?
Are maintenance strategies delivering the expected results?
Rather than reacting to individual events, organisations can begin identifying the underlying issues affecting reliability.
Finding Your "Bad Actors"
Every site has them.
The assets that always seem to demand attention.
They may not always be the most critical assets, but they consume a disproportionate amount of maintenance time, spare parts and engineering effort.
By analysing maintenance history, organisations can identify these "bad actors" and understand:
How often they fail
What typically fails
How much downtime they create
What they cost to maintain
Whether performance is improving or deteriorating
Often, a relatively small number of assets account for a significant proportion of maintenance effort. Identifying these assets allows engineering teams to focus their improvement activities where they are likely to deliver the greatest return.
Looking for Trends, Not Just Incidents
Maintenance information becomes far more valuable when it is viewed over time.
A single breakdown may not indicate a wider problem.
However, repeated failures, increasing repair costs or declining reliability can all point towards underlying issues that require investigation.
Trend analysis can help organisations identify:
Increasing failure rates
Recurring failure modes
Seasonal patterns
Age-related deterioration
Maintenance tasks that are no longer effective
Skills gaps
These insights enable maintenance teams to take proactive action before failures become more frequent or more costly.
Why Asset Collection Is Only Half the Story
Learn why successful asset collection includes condition surveys, maintenance history and data cleansing, creating the foundation for better maintenance decisions.
Are You Looking at the Right Reports?
Most modern CMMS systems can produce a wide variety of reports. The challenge isn't creating more reports, it's knowing which ones provide meaningful insight.
While every organisation will have its own priorities, there are some reports that almost every Maintenance Manager should review regularly.
1. Assets with the Highest Number of Failures
Identify the equipment that breaks down most frequently and understand why.
2. Assets Causing the Greatest Downtime ( top 10 failures )
A single failure may not happen often, but if it stops production for several hours, it deserves attention.
3. Highest Maintenance Cost Assets (Top 10 costs )
Understand where maintenance budgets are being spent and whether the investment is justified.
4. Repeat Failures
Recurring faults often indicate that the underlying cause has not been addressed.
5. Planned vs Reactive Maintenance
Monitor whether maintenance teams are spending their time preventing failures or responding to them.
6. Preventive Maintenance Compliance
Are planned maintenance tasks being completed when they should be?
7. Mean Time Between Failures (MTBF)
Track asset reliability and identify whether performance is improving or deteriorating.
8. Mean Time To Repair (MTTR)
Understand how quickly assets are being restored to service and identify opportunities to reduce downtime.
9. Top Failure Causes
Look beyond individual breakdowns to identify recurring failure mechanisms across similar assets.
10. Maintenance Backlog
Monitor outstanding work to ensure maintenance isn't simply being postponed and creating future reliability problems.
Individually, each report provides useful information. Together, they build a much clearer picture of asset performance, maintenance effectiveness and where improvement efforts should be focused.
Turning Information into Action
Collecting information doesn't improve maintenance. Analysing it doesn't improve maintenance either.
Improvement only happens when organisations use that information to make better decisions.
That might involve reviewing maintenance strategies, investigating recurring failures, improving planning and scheduling, replacing unreliable equipment or focusing engineering effort where it will have the greatest impact.
The information simply points the way.
The decisions that follow are what improve reliability.
Looking Beyond the Numbers
Modern maintenance teams don't need more information, they need better insight.
Understanding which assets consume the most maintenance effort, where failures are occurring and which trends are emerging enables organisations to move from reacting to problems towards preventing them.
Ultimately, maintenance history is much more than a collection of records.
It's the knowledge that helps organisations improve reliability, reduce costs and make better maintenance decisions.
