QAPP CI · CQI-20 SUPPORTING METHOD
PDCA
Structure improvement as a cycle: plan the change, test it, check the result and standardise or adjust.
Data and preparation
Problem, baseline, target, hypothesis, test plan, result and decision
Practical workflow
- PLAN — scope the problem, baseline and desired result.
- DO — test the change in a controlled scope.
- CHECK — compare the result with criteria defined in advance.
- ACT — standardise what works or adjust and repeat the cycle.
What QAPP records
| Problem / baseline | Analysis / action | Verification |
|---|---|---|
| Facts, scope, evidence and context | Hypotheses, causes, owner, action and due date | Result, effectiveness, lessons learned and standard update |
Connection to AIAG
PDCA is used here as a supporting improvement cycle. AIAG CQI-20 provides the problem-solving framework QAPP links it to; QAPP does not label PDCA itself as an AIAG Core Tool.
Open official source →Common trap
The diagram or question sequence is not the result. A cause becomes credible only when it is supported by evidence and the corrective action changes the predicted mechanism.