Center of Gravity Tail Threshold 
Pilot Institute
MARCH 26, 2024
This tendency is due to their high center of gravity and heavy engine over the nose wheel. 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. In extreme cases, a nose-over can occur.
AV Web
APRIL 15, 2025
It had cut into the tail rotor gearbox, tearing it off the helicopter. The pilot reported that he was too high and fast crossing the threshold 70 feet above ground level (AGL) at 90 mph. Halfway down the runway the airplane was about 30 feet AGL at a speed of about 45 mph, and oscillating 20 degrees either side of center.
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