Definition
The act of correcting for the sideways movement of an airplane caused by wind acting on it during flight, typically by establishing a wind correction angle (crab) so the airplane's actual path over the ground follows the intended track rather than being pushed off course.
Plain English
Wind tries to blow the airplane sideways off its path. Counteracting drift means heading the nose slightly into the wind so the airplane still travels in the direction you actually want to go.
Context Anchor
Used when flying the airport traffic pattern, especially when keeping the downwind leg parallel to the runway and lining up correctly for landing.
Derivation
Counteract' comes from Latin 'contra' (against) and 'agere' (to act) — to act against. 'Drift' comes from Old Norse and originally meant to be carried along by a current. Together: to act against being carried sideways by the wind.
Why Pilots Care
Properly counteracting drift keeps the aircraft on the correct ground track, prevents runway overshoots or undershoots, and maintains safe spacing with other traffic in the pattern.
Grounding Statement
Picture the airplane pointed generally where you want to go, while the wind quietly slides its path sideways across the ground.
Intuition Check
Do not assume the airplane only goes where its nose points. In wind, the airplane can be moving through the air one way while its path over the ground shifts sideways, so the pilot must correct for that drift.
Example Sentence 1
On the downwind leg with a wind from the west, the pilot turned the nose slightly toward the runway to counteract drift and maintain proper pattern spacing.
Example Sentence 2
During the turn from base to final the pilot adjusted heading early to counteract drift and avoid overshooting the runway centerline.