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← TechnologyWhich risk increases when a helicopter's SAS (Stability Augmentation System) malfunctions?
A)Pilot-induced oscillation amplification rises✓
B)Tail rotor thrust requirements lessen
C)Engine combustion instability decreases
D)Main rotor vortex ring state stabilizes
💡 Explanation
Loss of SAS increases pilot workload, potentially leading to pilot-induced oscillation (PIO) through negative feedback. `Rate dampening` fails, magnifying control inputs, because SAS directly counteracts deviations; therefore PIO risk increases, rather than stability, or changes in engine function.
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