As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT BOTH PILOT AND CO-PILOT BRAKES WERE VERY HARD DURING APPLICATION, WHEN BRAKES WERE APPLIED (CO-PILOT OR PILOT), AIRCRAFT WOULD NOT SLOW UNTIL A GREAT DEAL OF PRESSURE WAS APPLIED. SUSPECTED AIR IN SYSTEM, BLED LEFT & RIGHT BRAKES SEVERAL TIMES & PERFORMED SEVERAL OPS CHECKSOF LEFT & RIGHT SIDE PEDALS WITH NO DEFECTS IAW BRAKE BLEEDING PROCEDURE REVISED MEMO M344-08-106 MM 32-42-00.