NPI, DFM/DFA & Engineering Change worked example

Design Transfer Readiness at 65% expected line uptime during transfer: a worked example

Suppose expected line uptime during transfer falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate design transfer 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

  • Pilot-build output per transfer cycle: 4 units / cycle (held at the documented default)
  • Available design transfer cycles: 480 cycles (held at the documented default)
  • Expected line uptime during transfer: 65 % (the input this scenario stresses; the baseline uses 90)
  • Expected first-pass yield at transfer: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross design transfer readiness capacity = design transfer readiness output per cycle × available design transfer readiness cycles.
  • Good design transfer readiness capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross design transfer readiness capacity works out to 1,920 units at these inputs.
  • Design transfer readiness downtime loss works out to 672 units at these inputs.
  • Design transfer 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 line uptime during transfer sits at 90% and the headline result is 1,676 units, this scenario comes in 27.78% below the baseline at 1,211 units.
  • Computes good-unit capacity by taking gross capacity (output per cycle times cycles) and derating it for expected uptime and first-pass yield. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Good design transfer readiness capacity: 1,211 units (headline result)
  • Gross design transfer readiness capacity: 1,920 units
  • Design transfer readiness downtime loss: 672 units
  • Design transfer readiness yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Design Transfer Readiness calculator, set expected line uptime during transfer to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.