Everybody knows tonight’s the night Santa departs the North Pole on his round-the-world trip delivering presents. What you might not know is that because the weather at the North Pole can be challenging this time of year, Santa has an instrument approach procedure available for his arrival back home.
Pilots use an instrument approach procedure to guide them to an airport in lousy conditions like, say, an Arctic storm. When flying in clouds, known as instrument meteorological conditions or IMC, there are no ground references available to navigate by. Pilots must rely on instruments. Radio signals have been used for decades, but these days, GPS is the most common navigation aid.
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