The Robinson POH addresses Dynamic Rollover and tells the pilot what to do in order to counter this condition. That countermeasure is to dump collective when the pilot becomes aware that he is in that condition. I can see it now, Robinson will ammend Safety Notice SN-9 to tell the pilot to check for freezing of the skids to the ground and add a new piece of kit to the helicopter support equipment. An M1A1 MkI Ice pick.
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The Cat