Dialing in the altimeter setting is perhaps one of the most universal, timeless rituals of aviation, spanning decades, continents, and cultures, and tying all pilots to one another. This underscores the importance of atmospheric pressure and its effect on flight safety. But how much do you know about where those numbers come from?
In this issue we’ll take an introductory look at barometers, pressure, and get a better look at where QNH, QFE, and other values come from. If you’ve found them mysterious or confusing, this article is for you.
