As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT THE BRAKES WORKED INTERMITTENTLY ON TAXI. A FEW MINUTES INTO THE TAXI, THE PEDALS WERE FIRM BUT BRAKING ACTION WAS MINIMAL OR NON-EXISTENT. CREW RETURNED TO THE FBO. MAINTENANCE CHECKED IT OUT - BLED THE BRAKE SYSTEM, SERVICED THE HYDRAULIC RESERVOIR AND INSPECTED THE BRAKES. MAINTENANCE AND CREW PERFORMED A TAXI CHECK AND THE BRAKING SYSTEM FUNCTIONED NORMALLY.