"Our investigators have already developed a substantial amount of evidence about the circumstances of this tragic crash," said NTSB Chairman Robert L. Sumwalt. "And we are confident that we will be able to determine its cause as well as any factors that contributed to it so we can make safety recommendations to prevent accidents like this from occurring again.”
(My bolding of the text)
I shall say it is my opinion Mr. Sumwalt is talking out his hind end.
They will come up with a "Probable Cause", they shall make some recomendations, and that will be the end of it.
They are not able to force any change that shall prevent this from happening again.....that is for sure because helicopter pilots have an astounding ability to repeat history and the FAA has a unique talent at ignoring NTSB Recommendations.