Outwest, Sultan,
besides confirming that Weststar accident has been caused by an hard landing as consequence of a take off with a helo weight > MTOW,
the failure mode of AW139 blades are well known so far -
what we are unable to check right now if this failure mode is a consequence of a previous event - high vibrations due to an impact? Hydraulic failure? etc.
CVDR will support the root cause investigation.