TFS,
The issue with VRS is that the name is often applied to all those many more accidents where the power is simply not enough to both hover the aircraft where the pilot desires, and stop its descent prior to the hover. That temporary burst of energy needed on a normal steep, fast approach is often 10 or 15% more than that needed to perform a still hover. When a pilot makes a poor approach, drops through, droops the rotor, and whacks the ground, he says "Vortex Ring" and we all nod knowingly. The helicopter got the poor chap. If he spins around at the bottom (that extra 15% torque, remember?) we call it "LTE!"
I do try to keep our folly in the properly labeled boxes in the hope that when it is all said, we all at least know WHAT caused the accident, as a slight first step to actually not having one.
As a little refresher - you cannot experience vortex ring state in any helicopter at less than about 1000 feet per minute vertical descent, and at more than about 8 knots forward speed.