In what conditions is hydroplaning most likely to occur?

Hydroplaning is most likely to occur on wet runways with accumulated water because this situation creates the ideal conditions for the water to build up in front of the aircraft's tires, preventing them from effectively contacting the runway surface. When the water layer is thick enough, it can form a barrier that leads to a loss of traction, making it difficult for the aircraft to maintain control. This phenomenon is exacerbated when the runway is not only wet but also has puddles or significant water accumulation.

While dry runways do not present the risk of hydroplaning, as there is no water to cause the loss of traction, snowy or icy surfaces can lead to different types of control issues, but they do not involve hydroplaning in the same manner. Additionally, hydroplaning is not limited to takeoff; it can occur during landing or taxiing as well, particularly when the aircraft is moving at higher speeds over wet surfaces.