As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 BRAKE, OUTBOARD ROTOR, DRIVE CLIPS FAILED AND SHEARED OFF THE ROTOR. EIGHT(8) SHEARED OFF OUT OF SIXTEEN (16) TOTAL PER ROTOR. CAUSE: THE CARBON FIBER ROTOR MATERIAL, FAILED. BRAKE WAS REPLACED WITH OVERHAULED UNIT. NO OTHER DAMAGE WAS NOTED. AIRCRAFT RETURNED TO SERVICE.