As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION OF THE MAIN LANDING GEAR BRAKES, DRIVE ROTOR CLIPS FOUND THE NR 3 AND NR 4 BRAKE ASSEMBLIES TO HAVE FOUR CLIPS EACH BROKEN OFF. REPLACED BOTH BRAKE ASSEMBLIES WITH OVERHAULED UNITS. THIS IS A KNOWN CONDITION AND TROUBLESHOOTING IS ON GOING.