What are the four intensities of icing experienced in aviation?

The correct classification of the intensities of icing experienced in aviation is based on the operational impacts that ice accumulation can have on an aircraft. The four recognized intensities are trace, light, moderate, and severe.

• "Trace" icing refers to conditions where ice is perceptible but is not measurable or does not accumulate significantly. Pilots can typically manage these conditions without performance degradation.

• "Light" icing indicates that some ice accumulation may occur, but it is still manageable and can be removed during a normal flight.

• "Moderate" icing is more significant, with accumulation that could potentially affect aircraft performance, requiring the crew to take corrective action to maintain safe flight conditions.

• "Severe" icing presents a serious hazard, where ice accumulates quickly and can drastically affect the aircraft’s performance and control.

Understanding these categories is crucial for pilots to make informed decisions regarding flight safety and to avoid areas where icing conditions may threaten their operation. Other options do not accurately represent the established terminology used in aviation meteorology.