What phenomenon occurs when an aircraft is banked too little for the amount of rudder applied?

When an aircraft is banked too little for the amount of rudder being applied, the resulting phenomenon is skidding. This occurs because the rudder is used to control the yaw of the aircraft, and if the bank angle does not adequately correspond to the rudder input, the aircraft will not turn as intended. Instead, it will continue to move in the direction of the original flight path, leading to a state where it is moving sideways during a turn—this is referred to as skidding.

In this scenario, the aircraft's excessive lateral motion on the horizontal plane can create an uncomfortable experience for pilots and passengers alike and can lead to a loss of control if not corrected. Proper coordination of bank angle and rudder input is crucial for maintaining controlled turns and avoiding skidding, which emphasizes the importance of understanding aerodynamic principles in flight operations.