As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) HELI SKIING AFTER PASSENGERS DEPLANED, THE PILOT WAS GIVEN THE OK TO DEPART, THE PILOT ROLLED UP THE THROTTLES AND HEARD A NOISE OFF THE NR POWER SECTION AND AN AIRFRAME VIBRATION. SHUTDOWN ENGINE AND VIBRATION AND NOISE WENT AWAY.