As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRAKE ASSEMBLY PART NR H-12-148 SERIAL NR 19225K4 LT MAIN TIRE POSITION. MAGNESIUM BRAKE BACKING PLATE CRACKED AT THE 6 O'CLOCK POSITION AND BROKE ASSOCIATED RETAINING BOLT IN HALF. THIS FAILURE RESULTED IN THE LOSS OF THE SPECIFIED .008"/.010" BRAKE LINING TO DRUM CLEARANCE AND THE BRAKE LOCKED ON LANDING ROLLOUT WITH SIGNIFICANT COLLATERAL DAMAGE TO AIRCRAFT.