Manufacturing CAPA Report Writing Guide: Complete FDA/ISO Compliance

CAPA Overview

CAPA (Corrective and Preventive Action) is a systematic process to resolve nonconformities in manufacturing and prevent recurrence. FDA 21 CFR Part 820.100 and ISO 13485 mandate CAPA systems for medical device manufacturers, and it serves as a critical quality improvement tool across all manufacturing sectors.

Core CAPA Report Components

1. Problem Definition and Background

• Occurrence Details: Precise time, line, equipment information
• Problem Description: Specific narrative based on 5W1H
• Impact Scope: Defect quantity, customer impact, cost loss
• Immediate Actions: Emergency response documentation

Field Example: Automotive parts plant experiences 50 welding defects → Full batch inspection and shipment hold

2. Root Cause Analysis (RCA)

Key Analysis Techniques:

• 5 Why Analysis: Five-level questioning from symptom to root cause

  • Example: Welding defect → Why? Current instability → Why? Cable deterioration → Why? Preventive maintenance gap

• Fishbone Diagram: 4M1E perspective analysis

  • Man, Machine, Material, Method, Environment

• Fault Tree Analysis: Logical analysis of complex system failures

3. Corrective Action Development

Characteristics of Effective Actions:

• Specificity: "Conduct training" → "4-hour welding retraining for all operators by March 15"
• Measurability: Quantitative targets (defect rate 5% → < 0.5%)
• Accountability: Assignee, verifier, approver designation
• Timeline: Completion target and interim checkpoints

4. Preventive Action

Expand to similar equipment, processes, products:

• Horizontal Deployment: Proactive inspection of similar risk areas
• Standard Document Revision: Update work instructions, checklists
• Preventive Maintenance Planning: Add periodic inspection items

Effectiveness Verification

3-Stage Validation Process:

1. Short-term Verification (1-4 weeks): Confirm action implementation
2. Mid-term Monitoring (1-3 months): Statistical data collection and analysis
3. Long-term Evaluation (6-12 months): Final recurrence verification

KPI Examples: Defect rate, customer complaints, process capability index (Cpk)

FDA/ISO Requirements Checklist

FDA 21 CFR Part 820.100

• [ ] Document all nonconformities
• [ ] Perform root cause investigation
• [ ] Implement and record corrective actions
• [ ] Verify and document effectiveness

ISO 13485:2016

• [ ] Apply risk-based approach
• [ ] Utilize statistical techniques
• [ ] Report CAPA status in management review
• [ ] Preventive action through trend analysis

CAPA Report Template Example

CAPA #: 2024-001
Issue Date: 2024-03-10
Author: Kim Quality / Approver: Park Plant

[Problem Definition]
- Occurrence: 2024-03-08, 14:30
- Location: Line A, Welder #3
- Description: Porosity defects in weld, 50pcs

[Root Cause Analysis]
- Method: 5 Why + Fishbone
- Root Cause: Current instability due to welding cable insulation deterioration

[Corrective Actions]
1. Replace cable (Owner: Lee Equipment, Due: 03/12)
2. Install current monitoring system (Owner: Choi Electric, Due: 03/15)

[Preventive Actions]
1. Inspect all welding cables (Due: 03/20)
2. Add cable inspection to preventive maintenance (Frequency: 6 months)

[Effectiveness Verification]
- Short-term (4 weeks): Verify zero defects achieved
- Mid-term (3 months): Achieve process capability Cpk > 1.67

Practical Writing Tips

Avoid These Expressions:

• "Operator carelessness" → Reanalyze from system defect perspective
• "Enhance training" → Specify training content and evaluation method
• "Attention required" → Establish measurable control criteria

Effective CAPA is not merely problem-solving but a strategic tool to improve organizational quality culture. Through systematic report writing, you can prepare for FDA audits, secure customer trust, and build a continuous improvement culture.