"A gust of wind took their helicopter down ..."
Yep, that happens a fair bit!
Another most apt observation, but don't forget all of the other maladies, starting with, "engine seemed to lack power."
An opportune time to warn people about these "gust of winds" and slightly warmer temperature that occur this time of year over here and can cause a valve stem to just grip a bit when one is pulling a bit more power because of the extra temperature and less performance margins..
Time for CP's and all experienced pilots to do some earnest mentoring, as every year around this time someone gets done in or at least crashes. Winds and unpredictable gusts (up down, every which way) here lately have been diabolical this year.
cheers tet.