Audit Trail
An audit trail is a chronological record showing what information or status changed, when it changed, and which authorized user performed the action.
What this term means in maintenance
An audit trail is a chronological record showing what information or status changed, when it changed, and which authorized user performed the action.
Why audit trails matter
Maintenance records can affect safety, product quality, compliance, asset history, and business decisions. An audit trail helps demonstrate that important changes were controlled and attributable.
Typical events recorded
An audit trail may include:
- Work-order creation
- Assignment changes
- Priority changes
- Approval or rejection
- Status transitions
- Due-date changes
- Completion and closure
- Cancellation and reopening
- Checklist-result changes
- Document or attachment updates
Practical example
A preventive-maintenance work order was completed late. The audit trail shows its original due date, the approved postponement, the user who changed the date, the reason entered, and the final completion time.
Audit trail versus maintenance history
Maintenance history records what work was performed on an asset. An audit trail records changes made to the system record itself. Both may be required to understand the complete event.
Protection and readability
Audit-trail records should normally be protected from ordinary editing. At the same time, the history must be presented clearly enough for supervisors and auditors to understand.
Common mistake
Logging every technical event without a usable presentation creates noise. The system should preserve important changes without hiding the operational story.
How this term differs
Audit Trail is the system history showing who created or changed records and when. It is related to Maintenance Logbook, Equipment History, and Maintenance Record, but these terms describe different records, measures, roles, strategies, or decisions and should not be used interchangeably.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Maintenance Audit
A maintenance audit is a structured review of maintenance controls, records, execution, asset condition, and evidence to determine whether requirements are defined and consistently followed.
Work Order
A work order is an authorized record that defines maintenance work to be performed, including the asset, priority, scope, assignee, instructions, labor, parts, status, and completion evidence.
Calibration
Calibration is the documented comparison of a measuring instrument against a known reference to determine its accuracy and confirm whether it remains suitable for use.
Glossary FAQs
- What information should an audit trail contain?
It should show the affected record, the action or change, the responsible user, and the date and time.
- Is an audit trail the same as maintenance history?
No. Maintenance history records work performed on an asset. An audit trail records changes made to system records.
- Should audit-trail records be editable?
They should normally be protected from ordinary editing so they remain trustworthy.