As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRAKE FAILURE, UPON APPLICATION OF BRAKES, LT BRAKE PEDAL TRAVELED TO THE FLOOR WITH NO RESPONSE. BRAKING EVENTUALLY RETURNED. INSPECTED NR 1 & NR 2 BRAKE ASSEMBLY AND PERFORMED BLEEDING OF BOTH NR 1 & NR 2 BRAKES. TOOK AC ON GROUND TAXI RUN TO PERFORM BRAKE TEST. OPS CHECK SAT.