Aircraft Range and Payload
Range circles, payload-range diagrams, brochure assumptions, winds, reserves and operating derates.
Knowledge center
Aviation Planning Guides
Four focused collections connect Great Circle Pro's interactive maps, methodology and original aviation analysis without moving or replacing any existing articles.
ETOPS and EDTO
Diversion-time ratings, OEI reach, alternate airports, runway screening and route coverage.
Routes, Projections and Airspace
Great circle geometry, rhumb lines, polar routes, projections and airspace-driven detours.
Fuel, Efficiency and Emissions
Block fuel, the Breguet effect, per-seat efficiency, CO2, CO2e, SAF and contrail sensitivity.
Put the concepts on a map
Plot a route, choose an aircraft and test the planning assumptions described in these guides.