Aerospace & Defense Manufacturing worked example

Aerospace Machining Yield at 99% target machining yield: a worked example

What does the result look like when target machining yield reaches 99%? The full calculation is worked below with real intermediate numbers. a manufacturing engineer needs to compare actual machining yield against the quoted yield for aerospace components

The inputs for this scenario

  • Accepted machined aerospace parts: 188 parts (unchanged)
  • Total aerospace parts machined: 205 parts (unchanged)
  • Target machining yield: 99 % (raised for this scenario; the documented default is 96)

Working through the calculation

  • Applying the documented formula (Aerospace machining yield = accepted machined parts ÷ total parts machined × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 91.71 % machining yield for aerospace machining yield, the number this scenario is built around.
  • At this operating point the engine returns 7.29 percentage points for machining yield gap.
  • At this operating point the engine returns 188 parts for accepted machined aerospace parts.
  • At this operating point the engine returns 205 parts for total aerospace parts machined.

How this compares with the baseline

  • Against the tool's baseline example, where target machining yield sits at 96% and the headline result is 91.71 % machining yield, this scenario lands almost exactly on the baseline at 91.71 % machining yield.
  • A figure at this level is achievable when target machining yield is genuinely sustained, not just peaked for a shift. It is a count-based pass/fail ratio, so it treats a scrapped titanium spar and a minor cosmetic rework the same way — pair it with a cost-of-poor-quality figure before making capital decisions.

Results at a glance

  • Aerospace machining yield: 91.71 % machining yield (headline result)
  • Machining yield gap: 7.29 percentage points
  • Accepted machined aerospace parts: 188 parts
  • Total aerospace parts machined: 205 parts

Run it with your numbers

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

Last reviewed 2026-05-12.