UAV & Drone Manufacturing worked example

Flight Test Capacity at 99% flight test station uptime: a worked example

What does the result look like when flight test station uptime reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when flight test capacity in uav and drone manufacturing is being asked to take on more work and you need to know if there is room.

The inputs for this scenario

  • Aircraft flight-tested per test cycle: 4 units / cycle (unchanged)
  • Scheduled flight test cycles in the period: 480 cycles (unchanged)
  • Flight test station uptime (airworthy days, no grounding): 99 % (raised for this scenario; the documented default is 90)
  • Flight test first-pass yield (aircraft passing without retest): 97 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross flight test capacity = flight test capacity output per cycle × available flight test capacity cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,844 units for good flight test capacity, the number this scenario is built around.
  • At this operating point the engine returns 1,920 units for gross flight test capacity.
  • At this operating point the engine returns 19.2 units for flight test capacity downtime loss.
  • At this operating point the engine returns 57.02 units for flight test capacity yield loss.

How this compares with the baseline

  • Against the tool's baseline example, where flight test station uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 10% above the baseline at 1,844 units.
  • A figure at this level is achievable when flight test station uptime is genuinely sustained, not just peaked for a shift. It assumes uptime and first-pass yield are independent and stable; a single grounding event (regulatory, weather season, or a systemic firmware defect) can invalidate the averaged percentages for weeks.

Results at a glance

  • Good flight test capacity: 1,844 units (headline result)
  • Gross flight test capacity: 1,920 units
  • Flight test capacity downtime loss: 19.2 units
  • Flight test capacity yield loss: 57.02 units

Run it with your numbers

  • Every input above is editable in the live Flight Test Capacity calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.