As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW EXPERIENCED A LEFT MAIN LANDING GEAR BRAKE ISSUE DURING TAXI. POST INSPECTION LEFT MAIN TIRES WERE FLAT SPOTTED. MAINTENANCE REPLACED THE #1 AND #2 WHEEL/ TIRE AND BRAKE ASSEMBLIES. PILOT SIDE LEFT BRAKE MASTER CYLINDER WAS ALSO REPLACED. SYSTEM AND TAXI CHECK WAS PERFORMED WITH NO DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.