Drag Ground Effect Threshold 
Pilot Institute
MARCH 28, 2025
This horizontal component of lift is called Induced Drag. Its called induced drag since it only exists as a consequence of lift. If youre generating lift, youre stuck with induced drag as well. Vortex size is also affected by proximity to the ground. Increased Drag Moving air around is hard work!
Pilot Institute
MARCH 26, 2024
However, the increased drag might make it impossible to take off again. On a normal landing, you’d pull the power over the threshold, begin your roundout, and flare around 10 feet AGL. When crossing the threshold, start reducing the power. Hold this extra power as you enter ground effect.
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