weather servicesFAA-published sample question (IRA, Aug 2021)
The use of airborne weather-avoidance radar
A
provides no assurance of avoiding instrument weather conditions.✓ Correct Answer
B
assures the avoidance of hail.
C
allows you to fly safely between echoes.
Explanation
Weather radar detects precipitation, not clouds or fog (AIM 7-1-11), so it gives no assurance of avoiding instrument meteorological conditions. The Aviation Weather Handbook (22.8.1) describes airborne radar as a tool for avoiding severe weather, not for penetrating it. It notes that hail can fall several miles from the nearest cloud and that attenuation can hide cells behind other cells, so radar neither assures hail avoidance nor makes it safe to fly between echoes.
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