What defines trace icing?

Trace icing is defined as a condition where the accumulation of ice is so light that it may not be readily perceptible, but it still exists on the aircraft's surfaces. Although the icing may not significantly impact the performance of the aircraft, it is present in sufficient quantity to be measurable and could become problematic if conditions worsen or if left unaddressed. This classification helps pilots and crew recognize that even minimal icing can pose risks, especially in flight operations, yet it is often of such a slight amount that it might not be immediately noticeable. Therefore, identifying trace icing emphasizes the importance of vigilance regarding any icing conditions, as they can evolve into more serious situations.