Industrial Equipment, Machinery & Capital Goods worked example

Factory Acceptance Yield at 65% target fat first-pass yield: a worked example

Suppose target fat first-pass yield falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate first-pass factory acceptance yield from machines passing FAT, machines presented for FAT, and target yield.

The inputs for this scenario

  • Machines passing FAT first pass: 17 machines (held at the documented default)
  • Machines presented for FAT: 20 machines (held at the documented default)
  • Target FAT first-pass yield: 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Factory acceptance yield = machines passing FAT first pass ÷ machines presented for FAT × 100.
  • Factory acceptance yield works out to 85 % at these inputs, and this is the headline figure for the scenario.
  • Factory acceptance yield gap to target works out to -20 points at these inputs.
  • Machines passing FAT first pass works out to 17 count at these inputs.
  • Machines presented for FAT works out to 20 count at these inputs.

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 %.
  • It computes FAT first-pass yield as machines passing on the first attempt divided by machines presented, and the point gap to your target. 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

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

Run it with your numbers

  • To rerun this with your own numbers, open the live Factory Acceptance Yield calculator, set target fat first-pass yield to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.