How is "yaw" caused by an engine failure, and how should a pilot respond?

Yaw during an engine failure occurs due to the asymmetrical thrust created when one engine is producing power while the other is not. In multi-engine aircraft, if one engine fails, the thrust from the operating engine causes the aircraft to yaw toward the inoperative engine. This is a critical situation that can lead to an uncontrollable flight path if not addressed promptly.

The appropriate pilot response to this yaw is to apply rudder input toward the operating engine. This additional control input helps counteract the yawing moment and maintain coordinated flight, allowing the pilot to stabilize the aircraft and keep it within safe operational parameters. This technique is essential for maintaining control, especially during takeoff and initial climb, where the effects of an engine failure can be the most pronounced.

Focusing on the aerodynamic principles involved, when the thrust is uneven, the aircraft will naturally turn towards the engine that is not producing thrust. Therefore, proper rudder application is vital to keep the wings level and prevent unwanted bank angles that could lead to loss of control.