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Fishbone (Ishikawa) templates

QA Failures (Fishbone)

Root-cause analysis of units failing QA.

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Template previewFishbone (Ishikawa)
Why do units fail QA?QA failuresManpowerOperator fatigueInsufficient trainingMachineWorn toolingCalibration driftMethodUnclear work instructionsNo in-line inspectionMaterialOut-of-spec componentsSupplier variationMeasurementGauge errorEnvironmentHumidity swings

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title "Why do units fail QA?"
problem "QA failures"
category "Manpower"
  cause "Operator fatigue"
  cause "Insufficient training"
category "Machine"
  cause "Worn tooling"
  cause "Calibration drift"
category "Method"
  cause "Unclear work instructions"
  cause "No in-line inspection"
category "Material"
  cause "Out-of-spec components"
  cause "Supplier variation"
category "Measurement"
  cause "Gauge error"
category "Environment"
  cause "Humidity swings"