As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A TRAINING PERIOD, THE CABLE CUTTER ENGAGED THE CABLE CAUSING A PARTIAL FAILURE OF THE CABLE WHILE A CREW MEMBER WAS BEING LOWERED. THE HOIST HAS BEEN RETURNED TO THE MANUFACTURER FOR ANALYSIS. A FOLLOW-UP REPORT STATES MFG ANALYSIS FOUND THE CABLE CUTTER WAS INCORRECTLY INSTALLED, CAUSING CABLE TO FRAY.