A sad day
The cause cannot be hidden. The cause will determined to be either mechanical or human error. Now if it mechanical BATS is on the hook. Do you suppose that Bristow/BATS will shove their silly little helmet rule join the rest of the world and allow pilots to pull cowling and give the thing a proper look over in the morning before strapping and in and going... I doubt it! At least there could have been a second look. Maybe something got missed.... JOIN THE HELICOPTER INDUSTRY.
Why not invite in the NTSB to have a look... what's the harm in that?
Very sad for the family, way too young to go.