The Aviation Calculator, by ASD, is a simplified mobile version ofthe full blown Aviation Calculator that comes with the PDToolKitProcedure Design Suite for the design of ICAO and FAA flightprocedures. This mobile version covers tools like: Air Speed andDistance Calculation RNAV (Basic GNSS, DME/DME, VOR/DME) MinimumDistance between Waypoints Calculator Earliest/Latest distanceCalculator Track Distance (TRD) Calculator Obstacle ClearanceHeight (OCH) Calculator Wind Spiral Tool DME Tolerance Tool UnitConversions Gradient Conversions/Calculations ASD tools are used inthe development and design of flight procedures using either theICAO PANS-OPS or FAA TERPS criteria; these IFPP design tools coverconventional through to PBN (RNP AR, etc. ).