What causes a counterclockwise (left) roll in an aircraft, and how is it corrected?

A counterclockwise (left) roll in an aircraft can primarily be attributed to torque, which is a tendency for the aircraft to roll in the opposite direction of the engine rotation due to Newton's third law (for every action, there is an equal and opposite reaction). In a conventional single-engine aircraft where the engine rotates to the right, the left wing tends to drop as the torque causes the aircraft to roll left.

The proper correction for the left roll caused by torque involves using the rudder to counteract the yaw and maintain coordinated flight. Applying right rudder effectively offsets the yawing motion induced by the torque, allowing the aircraft to roll level.

While the use of ailerons can also contribute to controlling roll, it may not fully counter the yaw without rudder assistance. Understanding this relationship between torque and the aircraft's response is crucial for effective handling during flight.