Aftermarket, Field Service & Service Parts worked example

First-Time Fix Rate at 63% target first-time fix rate: a worked example

This worked example runs the first-time fix rate numbers for a tougher week than the baseline: 63% target first-time fix rate instead of the typical 88%. Calculate the percentage of field service calls resolved on the first visit without repeat dispatch, missing parts, or escalation.

The inputs for this scenario

  • Service calls resolved on the first visit: 410 calls (held at the documented default)
  • Total service calls dispatched: 485 calls (held at the documented default)
  • Target first-time fix rate: 63 % (the input this scenario stresses; the baseline uses 88)

Working through the calculation

  • The calculation starts from the formula this tool documents: First-time fix rate = service calls fixed on first visit ÷ total service calls × 100.
  • First-time fix rate works out to 84.54 % first-time fix at these inputs, and this is the headline figure for the scenario.
  • First-time fix gap works out to -21.54 percentage points at these inputs.
  • First-visit fixes works out to 410 calls at these inputs.
  • Total service calls works out to 485 calls at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target first-time fix rate sits at 88% and the headline result is 84.54 % first-time fix, this scenario lands almost exactly on the baseline at 84.54 % first-time fix.
  • Use it in weekly or monthly service reviews, when building a parts-stocking or training business case, or when benchmarking technicians and branches against each other. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • First-time fix rate: 84.54 % first-time fix (headline result)
  • First-time fix gap: -21.54 percentage points
  • First-visit fixes: 410 calls
  • Total service calls: 485 calls

Run it with your numbers

  • To rerun this with your own numbers, open the live First-Time Fix Rate calculator, set target first-time fix rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.