As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT A/C WAS UNRESPONSIVE ON BRAKE CHECK CAPT. SIDE: FULL PRESSURE WITH NO BRAKING AVALIBLE. F/O SIDE: PEDALS COMPLETLY FLOORED WITH NO PRESSURE. - REMOVED & REPLACED ANTI-SKID CONTROL FILTER & BLEED BRAKE SYSTEM IAW CE 560 MLM 32-42-00. COMPLIED WITH TAXI CHECK OF BRAKE OPERATIONAL TEST. OPERATIONAL CHECK GOOD.