As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRAKES ARE VERY "MUSHY" WHEN PRESSURE IS APPLIED. BRAKES ARE ALSO GRINDING WHEN STOPPING. BLED BRAKES NOTED SMALL AMOUNTS OF AIR REMOVED FROM SYS. USED COMPRESSED AIR TO REMOVE CARBON DUST FROM BRAKE STACKS. TAXIED ACFT. BRAKES ARE FIRM, NO GRINDING NOISE NOTED AT THIS TIME. WORK DONE IAW MM CHAP 32-42-00.