Plain English Meaning

The aircraft's tendency to swing its nose left or right on its own, mostly caused by the engine and propeller, which the pilot has to correct with rudder.

Full Definition

The natural inclination of an aircraft to rotate left or right about its vertical axis as a result of aerodynamic and mechanical forces, particularly those produced by engine torque, propeller slipstream, P-factor, and gyroscopic effects in single-engine propeller aircraft.

Context Anchor

Pilots notice yawing tendency during takeoff, slow flight, climbs, stalls, and any maneuver where the may not pointed where .