What is the biggest hazard associated with icing?

The biggest hazard associated with icing is that it distorts the airfoil. When ice accumulates on the wings and control surfaces of an aircraft, it alters the shape of these surfaces, which can significantly disrupt airflow. This distortion leads to a decrease in lift, as the smooth aerodynamic profile of the airfoil is compromised. The resulting turbulence can also cause a loss of control and increased stall risk.

While other effects of icing, such as reducing engine performance, increasing drag, and weight gain, are also serious concerns, the immediate danger of altered aerodynamics and loss of lift makes the distortion of the airfoil the most critical hazard. This is why recognizing and managing ice accumulation on an aircraft is vital to maintaining flight safety.