What was found
ON LANDING, AFT BRAKE LOCKED UP, AND MAIN WHEEL SEIZED. MAINTENANCE FOUND ONE CALIPER ANCHOR PIN SHEARED. REMOVED AND REPLACED MAIN WHEEL ASSY, BRAKE CALIPER, AND BRAKE BACKPLATE ASSY, THEN RETURNED AIRCRAFT TO SERVICE. AT THIS TIME, ALL ANCHOR PINS ARE BEING CHANGED IN THE OPERATOR''S FLEET. (X)