What should a pilot be aware of when operating in conditions leading to potential frost on the wings?

When operating in conditions that could lead to frost on the wings, it's crucial for a pilot to understand that ice and frost can indeed adhere to wing surfaces even at temperatures above freezing. This phenomenon can occur when humidity is high and temperatures drop, creating conditions where frost can form despite the air temperature appearing to be warm enough to prevent frost accumulation. Therefore, this answer highlights the importance of being vigilant about frost formation, regardless of what temperature readings suggest, as this can significantly affect aircraft performance by altering airfoil characteristics and reducing lift.

Other options suggest misunderstandings of frost and ice behavior in aviation. Some imply that frost is not a concern under certain conditions or that it behaves predictably, which is not the case in varying weather patterns. Being aware of the potential for frost at higher temperatures is critical for flight safety.