Provide a brief description of the organization and the context in which this problem arose. Include relevant process or product background.

Describe the symptoms observed and reported by the customer. Include customer name, affected part/product number, quantity defective, and detection location.

Detail the immediate ERA implemented to protect the customer prior to D3 containment. State date implemented, responsible person, and verification method.

Define each team member's specific 8D role. Include Champion (decision authority), Team Leader (process owner), SMEs (subject matter experts), and any supplier/customer representatives.

Write a clear, specific problem statement using the 5W2H framework:

• Who: Customer / End-user affected
• What: What specifically failed or is wrong
• When: When was the defect first detected
• Where: Where in the process / product was the defect found
• Why: Initial hypothesis (not root cause)
• How: How was the defect detected
• How Many: Quantity / rate of defect

Use the Is/Is Not matrix to scope the problem accurately.

• IS: State what the problem IS (object, defect, when, where, extent)
• IS NOT: State what the problem IS NOT to eliminate irrelevant areas
• Distinction: Highlight unique factors that separate IS from IS NOT

Present defect trend data: time-series charts, Pareto charts, control charts, or customer complaint logs. Include baseline defect rate (PPM/DPMO) if available.

List all ICAs implemented to prevent further defective product reaching the customer:

• 100% inspection or sorting activities
• Quarantine of suspect inventory
• Temporary process holds or rework instructions
• Responsible person and completion date for each action

Provide evidence that ICAs are working effectively. Show before/after defect rates, customer feedback, escape data, or inspection results post-containment.

Paste or insert the Cause & Effect (Fishbone/Ishikawa) diagram identifying potential root causes across the 6M categories: Man, Machine, Method, Material, Measurement, Mother Nature (Environment).

Document the 5-Why drill-down for the top potential causes. Separate analysis for:

• Occurrence Root Cause: Why did the defect occur?
• Escape Root Cause: Why was the defect not detected before reaching the customer?

Present statistical or experimental evidence confirming the root causes identified. Include correlation data, DOE results, hypothesis tests, or controlled trials that prove the cause-effect relationship.

List all candidate Permanent Corrective Actions evaluated. Use a decision matrix or Pugh concept selection comparing options against criteria: cost, effectiveness, feasibility, sustainability, time to implement.

State the selected PCA(s) and present proof of fix evidence — typically a controlled experiment showing the defect occurs when PCA is absent and does NOT occur when PCA is applied (turning on/off test).

Present the full implementation plan (action register) including:

• Each action item with owner and target date
• Process changes, tooling modifications, procedure updates
• Training requirements and sign-off plan
• Removal of ICAs upon successful PCA validation

Show validation data confirming PCAs are effective in production. Include before/after control charts, capability indices (Cpk before vs after), defect rate comparison, and updated customer scorecard data.

Identify and implement systemic actions to prevent recurrence on similar products, processes, or production lines. Apply lessons learned across the broader manufacturing/service system.

List all updated control documents as a result of this 8D:

• FMEA (Design or Process) — updated severity, occurrence, detection ratings
• Control Plan — updated control methods and reaction plan
• Standard Work / SOPs — updated work instructions
• Engineering drawings / specifications (if applicable)

Document key lessons learned from this 8D cycle to be shared across the organization and incorporated into future design/process reviews and new product introduction (NPI) checklists.

Summarize the 8D outcomes: problem resolved, defect rate achieved, customer satisfaction restored. Recognize team contributions and provide summary of improvements delivered.