A structured investigation method used to identify the underlying causes of a problem or defect.
Root Cause Analysis digs beneath the defect to find why it happened in the first place. The goal is to fix the process, not just the batch.
Popular RCA techniques
Teams combine tools such as the 5 Whys, Ishikawa diagrams, and fault tree analysis to reveal process weaknesses. Selecting the right technique depends on the complexity of the issue.
Linking RCA to action
Insights feed directly into CAPA plans that specify owners, timelines, and verification steps.
Lessons learned also improve future FMEA workshops, helping teams anticipate issues before they reach customers.
Key takeaways
- RCA gets to the source of recurring issues.
- Findings should always link to corrective and preventive actions.
- Centralised documentation accelerates future investigations.