About this add-on

Before GPS revolutionised just about everything, most of us old-timey pilot types used either dead reckoning or pilotage - or a combination of the two. While the two techniques overlap in some areas, at their core they approach cross-country flights in totally different ways. In its purest form, 'dead reckoning' (short for deduced reckoning) involves picking a compass heading and holding it until you reach the next waypoint, while using elapsed time to calculate your position. If you're lucky, you have some interim information that allows you to adjust your compass heading to correct for…

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