Plain English Meaning

Thinking through, in advance, exactly how you are going to fly down to the runway in poor visibility — which procedure you'll use, what altitudes and headings to expect, what the weather is doing, and what to do if you can't land.

Full Definition

The structured pre-flight and in-flight process of preparing for an instrument approach to a runway, including selecting the appropriate approach procedure, reviewing approach charts, briefing minimums and missed approach instructions, configuring navigation equipment, and anticipating weather, terrain, and traffic factors that affect a safe arrival.