NPI, DFM/DFA & Engineering Change worked example

Supplier Launch Readiness at 65% expected supplier line uptime at launch: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop expected supplier line uptime at launch to 65%, then walk the calculation through step by step. Estimate supplier launch readiness for npi, dfm/dfa and engineering change using production-ready inputs so teams can confirm whether capacity can cover demand before committing the schedule.

The inputs for this scenario

  • Supplier good units produced per launch cycle: 4 units / cycle (held at the documented default)
  • Launch cycles the supplier can run: 480 cycles (held at the documented default)
  • Expected supplier line uptime at launch: 65 % (the input this scenario stresses; the baseline uses 90)
  • Expected supplier first-pass yield at launch: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross supplier launch readiness capacity = supplier launch readiness output per cycle × available supplier launch readiness cycles.
  • Good supplier launch readiness capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross supplier launch readiness capacity works out to 1,920 units at these inputs.
  • Supplier launch readiness downtime loss works out to 672 units at these inputs.
  • Supplier launch readiness yield loss works out to 37.44 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expected supplier line uptime at launch sits at 90% and the headline result is 1,676 units, this scenario comes in 27.78% below the baseline at 1,211 units.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to expected supplier line uptime at launch, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes uptime and yield are independent and stable; a supplier whose yield collapses under volume, or whose uptime drops as tooling wears, will deliver less than the model predicts.

Results at a glance

  • Good supplier launch readiness capacity: 1,211 units (headline result)
  • Gross supplier launch readiness capacity: 1,920 units
  • Supplier launch readiness downtime loss: 672 units
  • Supplier launch readiness yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Supplier Launch Readiness calculator, set expected supplier line uptime at launch to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.