Desired Track (DTK) #3:
Headwork, Part One

Among other things, aviation can be referred to as a numbers game: heading, altitude, airspeed, distance, time. Fortunately, today's cockpits have a lot of equipment available to compute and display the important ones. But what's behind some of these numbers? How can we compute some of them on our own, in our head, when we want to or need to? In this first of a two-part series, AVweb Executive Editor Joseph E. (Jeb) Burnside explores how to use

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