Airport Ground Support Equipment worked example

GSE Production Ramp Gap at 59% production ramp uptime: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop production ramp uptime to 59%, then walk the calculation through step by step. Estimate usable production ramp capacity for GSE from units per ramp cycle, available cycles, ramp uptime, and launch yield.

The inputs for this scenario

  • GSE units per production ramp cycle: 4 units/cycle (held at the documented default)
  • Available production ramp cycles: 60 cycles (held at the documented default)
  • Production ramp uptime: 59 % (the input this scenario stresses; the baseline uses 82)
  • Launch first-pass yield: 88 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross GSE ramp output = units per ramp cycle × available ramp cycles.
  • Usable GSE ramp output works out to 125 ramp units at these inputs, and this is the headline figure for the scenario.
  • Gross GSE ramp output works out to 240 ramp units at these inputs.
  • Ramp output lost to startup downtime works out to 98.4 ramp units at these inputs.
  • Ramp output lost to launch rework works out to 16.99 ramp units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where production ramp uptime sits at 82% and the headline result is 173 ramp units, this scenario comes in 28.05% below the baseline at 125 ramp units.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to production ramp uptime, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats uptime and yield as flat averages over the ramp, so a line that improves quickly week to week will under-forecast late in the ramp.

Results at a glance

  • Usable GSE ramp output: 125 ramp units (headline result)
  • Gross GSE ramp output: 240 ramp units
  • Ramp output lost to startup downtime: 98.4 ramp units
  • Ramp output lost to launch rework: 16.99 ramp units

Run it with your numbers

  • To rerun this with your own numbers, open the live GSE Production Ramp Gap calculator, set production ramp uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.