Which consequence results when a tail rotor's collective pitch control fails in a helicopter?

💡 Explanation

When collective pitch control fails, the tail rotor thrust cannot be adjusted; because the mechanical linkage is broken, uncontrolled yaw rotation commences due to main rotor torque. Therefore, a spin occurs rather than stabilized flight, due rotor compensating action being lost.

• Which outcome occurs when excessive non-condensables accumulate in a heat pump system's condenser?
• Which outcome occurs when rapid closing of a high-voltage circuit breaker causes a surge impedance mismatch?
• Which risk increases significantly when distributed control systems exceed network bandwidth capacity?
• Which risk increases when cascading circuit breakers in an industrial power distribution system experience a fault condition beyond the instantaneous trip threshold?
• Which risk increases when quantization error is not properly mitigated during analog-to-digital signal processing in software-defined radio?
• Which risk increases for fiber-optic communication systems when employing excessively high pump power in Raman amplification?