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The 3000-foot rule

Added on: November 16, 2017         Duration: 7 minutes

Pilots are taught many rules of thumb with respect to weather. In many instances they can replace real weather analysis, and therefore, lead to poor decisions. If you ask an instrument pilot about rules of thumb related to airframe icing, they will usually bring up one known as the 3000-foot rule. Basically this rule of thumb states that if you encounter icing conditions while en route, a simple climb or descent of 3,000 feet will usually allow you to exit those icing conditions. Given that most airframe icing encounters are experienced within clouds, how close to reality is this rule of thumb? In this workshop, we will look at a fairly comprehensive study done by Environment Canada that may shed some light on its validity.

 

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