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FAA Private Pilot

Category - FAA Private Pilot

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PLT259 PVT
Ground resonance is most likely to develop when

Taking off in a calm wind
Landing in gusty winds
When a hard landing causes shocks to the helicopter, thereby causing the rotor blades to become unbalanced
Is caused by the blades while the helicopter is hovering in ground effect.

Explanation

Correct answer: C. When a hard landing causes a shock to the helicopter, thereby causing the rotor blades to become unbalanced. If the blades become unbalanced, the rotorscan cause a problem that is like an unbalanced load in a washing machine.

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