Light turboprop aircraft are more susceptible to icing than commercial jet aircraft because they typically fly at:

Light turboprop aircraft are more susceptible to icing than commercial jet aircraft primarily due to their operational altitudes. These turboprop aircraft generally operate at lower altitudes, where conditions conducive to icing are often more prevalent.

At lower altitudes, particularly in the range where light turboprops commonly fly, temperatures can be around or below freezing, and moisture is more likely to be present. This combination creates an ideal environment for icing to occur, especially in conditions that involve cloud cover or precipitation, such as rain or snow. Additionally, turboprop aircraft often do not possess the same advanced anti-icing systems, which can make them more vulnerable in these conditions compared to larger commercial jets that typically cruise at higher altitudes where the atmosphere tends to be colder and less humid, thus reducing the likelihood of ice formation.

In summary, the operational altitude of light turboprop aircraft puts them in environments that are more prone to icing, making them more susceptible compared to commercial jets that fly at higher altitudes, where icing conditions are much less frequent.