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Enter your true course, true airspeed, and the wind to instantly compute ground speed, wind correction angle, true heading, and headwind/crosswind components.
Course 360°, TAS 100 kt, wind 270/20 computes to: ground speed 98.0 kt, WCA −11.5° (correct left), true heading 349°, no head/tailwind, 20 kt crosswind from the left.