Industrial Equipment, Machinery & Capital Goods worked example

Factory Acceptance Yield at 99% target fat first-pass yield: a worked example

This scenario runs the factory acceptance yield calculation on the strong side: 99% target fat first-pass yield, with every other input held at its documented default. Use it when tracking how often equipment passes factory acceptance without major rework or retest.

The inputs for this scenario

  • Machines passing FAT first pass: 17 machines (unchanged)
  • Machines presented for FAT: 20 machines (unchanged)
  • Target FAT first-pass yield: 99 % (raised for this scenario; the documented default is 90)

Working through the calculation

  • Applying the documented formula (Factory acceptance yield = machines passing FAT first pass ÷ machines presented for FAT × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 85 % for factory acceptance yield, the number this scenario is built around.
  • At this operating point the engine returns 14 points for factory acceptance yield gap to target.
  • At this operating point the engine returns 17 count for machines passing fat first pass.
  • At this operating point the engine returns 20 count for machines presented for fat.

How this compares with the baseline

  • Against the tool's baseline example, where target fat first-pass yield sits at 90% and the headline result is 85 %, this scenario lands almost exactly on the baseline at 85 %.
  • Use it at end-of-line acceptance reviews to judge build quality and decide whether a line is meeting its first-pass goal. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Factory acceptance yield: 85 % (headline result)
  • Factory acceptance yield gap to target: 14 points
  • Machines passing FAT first pass: 17 count
  • Machines presented for FAT: 20 count

Run it with your numbers

  • Every input above is editable in the live Factory Acceptance Yield calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.