As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE MAIN ROTOR SPINDLE WAS CRACKED AT THE TRAILING EDGE TANGS. BOTH LOWER AND UPPER TANGS WERE CRACKED. THE CRACK WAS DETECTED DURING A DAILY VISUAL INSPECTION BY A COMPANY TECHNICIAN. SUBMITTER STATED FAILURE OF THIS SPINDLE WOULD HAVE CERTAINLY LED TO A CATASTROPHIC ACCIDENT.