In a banked turn, what causes adverse yaw and how is it countered?

• A. The downward-moving wing produces more induced drag and yaw opposite the turn; counter with coordinated rudder.
• B. The airplane's natural slip causes yaw toward the turn; counter with aileron input only.
• C. The up-going wing produces less lift causing yaw toward the bank; counter with bank angle increase.
• D. The fuselage yaw due to propwash; counter with neutral rudder.

Answer: (A)

When you roll into a bank, the wing that moves downward into the turn becomes the down-going wing. This wing has a higher angle of attack, so it generates more lift but also more induced drag. The extra drag on the down-going wing creates a yaw in the opposite direction of the turn — adverse yaw. To counter this, you use coordinated rudder, applying it in the direction of the turn so the nose stays aligned with the flight path while you hold the bank with the ailerons. This coordinated input minimizes the yaw tendency and keeps the turn smooth. The other ideas don’t fit because adverse yaw mainly comes from increased induced drag on the down wing, not from lift on the up-moving wing, natural slips, or propwash effects, and countering it effectively requires rudder in the turn direction in addition to aileron control.