N5296s
The reportis here
http://www.atsb.gov.au/media/666073/...600738_001.pdf
In it states.
The activation of the low rotor RPM warning horn after the onset of LTE was probably a function of the combined effects of an initially high or increased collective pitch setting, the possible application by the pilot of an amount of left pedal in response to the right yaw, the violence of the uncommanded yaw and descent, and of the control inputs used to recover the helicopter.
Wild assumption on my part but I imagine many peoples initial reaction to the turning and falling would be to pushleft pedal and raise the lever, both of which will contribute to an increased power demand and droop the rotor RPM.
GS