As SASless suggests we don't know the finner details and may never know what exactly happened, but it makes those of us who fly around in R44 and similar size machines stop and think.
Do we know what the job was, FLying over areas, or in & out of confined areas?
Flying straight and level at MAUW on a hot day is one thing, flying into confined areas is another, more so if the mechanics fail.
Condolences to the familly and freinds of all involved.
Mullet.