As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIMARY BLADE BOLTS ARE WORN. BOTTOM COVER CRACKED THROUGH BOLT THREADS BROKEN. DISSEMBLED AND CLEANED. PERFORMED VISUAL & NDT INSPECTIONS. SCRAPPED BOTTOM COVER & THROUGH BOLT. RETURNED SERVICEABLE PARTS TO STOCK. INSPECTED IAW BO-105 MM CH 12.