NPI, DFM/DFA & Engineering Change worked example

Launch Readiness Score with launch defect severity rating of 3 score: a worked example in npi, dfm/dfa & engineering change

Here is what the math looks like when conditions slip. We hold every other input steady and drop launch defect severity rating to 3 score, then walk the calculation through step by step. Estimate launch readiness for npi, dfm/dfa and engineering change using production-ready inputs so teams can rank risks and decide which issue needs containment, controls, or escalation first.

The inputs for this scenario

  • Launch defect severity rating: 3 score (the input this scenario stresses; the baseline uses 6)
  • Launch defect occurrence rating: 4 score (held at the documented default)
  • Launch defect detection rating: 3 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Launch readiness risk score = launch readiness severity score × launch readiness occurrence score × launch readiness detection score.
  • Launch readiness risk score works out to 3.35 score at these inputs, and this is the headline figure for the scenario.
  • Launch readiness severity score works out to 3 score at these inputs.
  • Launch readiness occurrence score works out to 4 score at these inputs.
  • Launch readiness detection score works out to 3 score at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where launch defect severity rating sits at 6 score and the headline result is 4.55 score, this scenario comes in 26.37% below the baseline at 3.35 score.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to launch defect severity rating, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. The score is only as good as the rating scale; if severity, occurrence, and detection aren't defined consistently across the team, scores aren't comparable.

Results at a glance

  • Launch readiness risk score: 3.35 score (headline result)
  • Launch readiness severity score: 3 score
  • Launch readiness occurrence score: 4 score
  • Launch readiness detection score: 3 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Launch Readiness Score calculator, set launch defect severity rating to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.