During ground operations that may lead to ice formation, what must be true regarding the aircraft?

During ground operations where the potential for ice formation exists, it is crucial for the aircraft to be completely free of all frozen contaminants. Frozen contaminants, such as ice, snow, or frost, can significantly impair the aircraft's aerodynamic performance, control, and safety. This is particularly true for critical surfaces like wings, tailplane, and control surfaces, which must be kept clean to ensure proper airflow and lift during takeoff and landing.

Maintaining a contaminant-free condition enhances the aircraft's ability to perform safely and effectively, thus minimizing the risk of accidents or incidents related to ice accumulation. A thorough pre-flight inspection and de-icing procedures are typically employed to ensure that the aircraft is in optimal condition before flight operations commenced.