What temperature range can lead to engine icing?

Engine icing can occur when the temperature is up to 10 degrees Celsius, particularly when there is high relative humidity. In these conditions, the moisture in the air can condense and freeze within the engine. When temperatures are above freezing, it is often perceived that icing is not a concern; however, the presence of significant humidity can create conditions conducive to icing. This is because water vapor in high humidity can contribute to the formation of ice even at these relatively warm temperatures.

The conditions that can lead to icing are not limited to subzero temperatures. Thus, situations not involving high humidity at lower temperatures may not pose the same risk. Additionally, while wind can influence the ambient conditions, it does not directly result in icing unless combined with other factors like temperature and humidity. Therefore, understanding the interplay of temperature, humidity, and potential for ice formation is crucial for recognizing when engine icing is a risk.