As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO BRAKES WERE NOTED BY PILOT FOR LEFT TIRE. MAINTENANCE INSPECTED AIRCRAFT AND DETERMINED THAT THE LEFT BRAKE MASTER CYLINDER HAD FAILED. THE UNIT IS SUSPECTED TO HAVE INTERNAL LEAKAGE. UNIT WAS REPLACED AND NO FURTHER ISSUES WERE NOTED