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Most pilots in the US are more familiar with temperature in degrees Fahrenheit than in degrees Celsius as reported in METARs, with the winds aloft forecasts, and in most aviation reports. And most pilots that I know don’t think in Celsius but need to make the conversion to Fahrenheit. If you know a couple of [...]

Finding the reciprocal of a compass heading.
The easiest way to find the opposite direction on a compass is to use a two step process. If the current direction is less than 180, add 200 and then subtract 20. If the current heading is greater than 180, subtract 200 then add 20. So for a simple [...]