If the pilot were to make a near-vertical power approach into a confined area with the airspeed near zero, what hazardous condition may develop?
A
Ground resonance when ground contact is made.
B
A settling-with-power condition.✓ Correct Answer
C
Blade stall vibration could develop.
Explanation
A near-vertical descent with power and near-zero airspeed is the classic setting for settling with power (vortex ring state), in which the helicopter settles into its own downwash and adding power increases the sink rate. Ground resonance needs ground contact with an unbalanced rotor, and retreating blade stall is a high-speed phenomenon.
Related helicopter questions
Keep practising
Study more FAA Private Pilot Helicopter questions, or take a timed practice quiz.