NPI, DFM/DFA & Engineering Change worked example

Launch Readiness Score with launch defect severity rating of 15 score: a worked example in npi, dfm/dfa & engineering change

What does the result look like when launch defect severity rating reaches 15 score? The full calculation is worked below with real intermediate numbers. Use it when launch readiness in npi, dfm/dfa and engineering change needs a defensible ranking against other npi, dfm/dfa and engineering change risks for the next review.

The inputs for this scenario

  • Launch defect severity rating: 15 score (raised for this scenario; the documented default is 6)
  • Launch defect occurrence rating: 4 score (unchanged)
  • Launch defect detection rating: 3 score (unchanged)

Working through the calculation

  • Applying the documented formula (Launch readiness risk score = launch readiness severity score × launch readiness occurrence score × launch readiness detection score) to the inputs above produces each figure below.
  • At this operating point the engine returns 8.15 score for launch readiness risk score, the number this scenario is built around.
  • At this operating point the engine returns 15 score for launch readiness severity score.
  • At this operating point the engine returns 4 score for launch readiness occurrence score.
  • At this operating point the engine returns 3 score for launch readiness detection score.

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 79.12% above the baseline at 8.15 score.
  • A figure at this level is achievable when launch defect severity rating is genuinely sustained, not just peaked for a shift. 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: 8.15 score (headline result)
  • Launch readiness severity score: 15 score
  • Launch readiness occurrence score: 4 score
  • Launch readiness detection score: 3 score

Run it with your numbers

  • Every input above is editable in the live Launch Readiness Score calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.