CMMS, EAM & Spare Parts Management worked example

Maintenance SLA Attainment at 99% target sla attainment: a worked example

What does the result look like when target sla attainment reaches 99%? The full calculation is worked below with real intermediate numbers. a maintenance or asset-management team needs to monitor service performance, adjust staffing, and identify asset areas with chronic SLA misses for a maintenance SLA reporting period

The inputs for this scenario

  • SLA-covered work orders completed on time: 520 count (unchanged)
  • SLA-covered work orders due: 610 count (unchanged)
  • Target SLA attainment: 99 % (raised for this scenario; the documented default is 92)

Working through the calculation

  • Applying the documented formula (Maintenance SLA Attainment rate = SLA-covered work orders completed on time ÷ SLA-covered work orders due × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 85.25 % for maintenance sla attainment rate, the number this scenario is built around.
  • At this operating point the engine returns 13.75 points for maintenance sla attainment gap to target.
  • At this operating point the engine returns 520 count for sla-covered work orders completed on time.
  • At this operating point the engine returns 610 count for sla-covered work orders due.

How this compares with the baseline

  • Against the tool's baseline example, where target sla attainment sits at 92% and the headline result is 85.25 %, this scenario lands almost exactly on the baseline at 85.25 %.
  • A figure at this level is achievable when target sla attainment is genuinely sustained, not just peaked for a shift. It treats every work order equally; a single missed safety-critical order weighs the same as a missed cosmetic one, so pair it with priority-weighted reporting for risk.

Results at a glance

  • Maintenance SLA Attainment rate: 85.25 % (headline result)
  • Maintenance SLA Attainment gap to target: 13.75 points
  • SLA-covered work orders completed on time: 520 count
  • SLA-covered work orders due: 610 count

Run it with your numbers

  • Every input above is editable in the live Maintenance SLA Attainment calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.