Instrument Flight Rules (IFR) Practice Exam 2026 - Free IFR Questions and Study Guide

When flying through stratiform clouds, the best action to alleviate icing is to change altitude to one with above-freezing temperatures. Icing typically occurs in clouds where the temperature is at or below freezing and where supercooled liquid water droplets are present. By ascending or descending to a temperature zone where it is warmer than freezing, pilots can effectively escape the conditions that lead to ice accumulation on the aircraft's surfaces.

This tactic is useful because warmer air will not contain supercooled droplets, thus eliminating the risk of further icing. Additionally, monitoring weather reports and knowing the altitude at which temperatures are above freezing can be crucial in these situations.

While slowly climbing out of the icing layer might work in some instances, there are no guarantees that the temperature will rise significantly enough to alleviate the icing conditions. Descending to find warmer air could potentially be beneficial, but it may also lead to entering lower, potentially hazardous weather scenarios, and it's not always a viable option due to terrain or other factors. Increasing speed to reduce ice accumulation does not effectively address the fundamental issue of the temperature, rather it could potentially worsen the situation by increasing the impact and accumulation of ice on the aircraft.