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RCA (Root Cause Analysis)

A structured investigation method used to identify the underlying causes of a problem or defect.

Definition and context

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.

Where this term fits in the workflow

RCA (Root Cause Analysis) is usually shown in the corrective action and containment.

Terms for stopping defects fast, documenting nonconformance, and proving corrective action is complete.

8D ReportCAPA (Corrective and Preventive Action)CAR (Corrective Action Report)Nonconformance report (NCR)Supplier Corrective Action Request (SCAR)

What is KaizenQ?

KaizenQ helps factory teams record inspection results, defect photos, and notes in one report shared with the office.

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KaizenQ inspection report preview

Key takeaways

  • RCA gets to the source of recurring issues.
  • Findings should always link to corrective and preventive actions.
  • Centralised documentation accelerates future investigations.

Practical guides

Compare with related terms

CAPA (Corrective and Preventive Action)FMEA (Failure Mode and Effects Analysis)AQL (Acceptance Quality Limit)8D ReportCAR (Corrective Action Report)Nonconformance report (NCR)

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