As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRAKES NOT FUNCTIONING PROPERLY, WHILE TAXIING STRAIGHT AHEAD BRAKE PEDALS WERE STIFF AND NON-REACTIVE, THEN WOULD CATCH ONE SIDE AT A TIME CAUSING DIRECTIONAL PROBLEMS. NOTED BRAKE ACCUMULATOR OVERSERVICED AND LT BRAKE SOFT. ADJUSTED ACCUMULATOR PRESSURE AND BLEED LT BRAKE, TAXIED AC. OPS CHECK GOOD. WORK DONE IAW CH 32-42-00 OJF THE 560 ULTRA MM.