Trajectory
Where the aircraft flew
Actual 4-D flight path reconstructed from ADS-B, with aircraft and engine type.
Fair Sky matches flight trajectories to satellite-observed contrails and quantifies the climate impact of every flight — so operators, verifiers, and regulators can trust the numbers behind non-CO₂ reporting and mitigation.
Each flight is scored end-to-end. No modeled claim stands alone — every step is checked against what the atmosphere and the satellite actually show.
Actual 4-D flight path reconstructed from ADS-B, with aircraft and engine type.
Temperature and ice supersaturation along the track from reanalysis and forecast meteorology.
Geostationary and polar satellite imagery confirms whether a contrail appeared, spread, and persisted.
Observed contrails are matched back to individual aircraft with an explicit confidence score.
Persistence, extent, and radiative effect — reported per flight, comparable to an avoidance alternative.
Avoidance tools are increasingly built by the same organizations that plan the flights. When the entity recommending a reroute also grades whether it worked, the numbers can't anchor compliance, markets, or public trust. Fair Sky builds no avoidance product — we exist only to verify.
Reporting is the entry point. Once non-CO₂ impact is measured, operators must decide which flights to mitigate — and prove the mitigation worked, at the smallest fuel and operational penalty.
Meet mandatory non-CO₂ reporting, target the small share of flights that drive most contrail warming, and verify that avoidance actions actually reduced impact.
Embed an independent contrail intelligence and verification layer inside the software airlines already use for dispatch and planning.
Independent, observation-backed evidence to substantiate operator non-CO₂ submissions in the EU MRV workflow.
See the full climate impact of your travel program — CO₂ and observed non-CO₂ — and steer spend toward lower total-impact flights.
We combine aircraft trajectory, atmospheric conditions, satellite observations and aircraft metadata to identify persistent contrails and verify whether mitigation worked.
Persistent warming contrail observed and attributed with high confidence.
Compare the observed flight with the lowest-cost alternative trajectory.
Persistent contrail observed.
77% lower estimated contrail climate impact.
We’re building independent measurement, reporting, and verification for aviation’s non-CO₂ climate effects. If you’re an airline operator, verifier, flight-planning provider, corporate travel buyer, researcher, or potential partner, we’d love to hear from you.
Tell us what you’re working on and where independent contrail verification could help.
Email Fair Sky