Plain English Meaning

When one engine produces more push than the other, the airplane wants to twist and turn toward the weaker side. The pilot has to use rudder and aileron to keep the airplane straight.

Full Definition

A condition in a multi-engine airplane in which the thrust produced on one side of the aircraft is unequal to the thrust on the other side, creating a yawing and rolling moment toward the side with less thrust. It most commonly occurs after the failure or partial loss of power in one engine, but can also result from uneven power settings between engines.

Context Anchor

Encountered when learning climbs, high-power low-speed flight, and the need for rudder pressure to keep the airplane .