As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN APPLYING BRAKES, THEY TAKE A WHILE TO APPLY AND THEN GRAB ALL AT ONCE. DURING ENGINE RUNS APPLIED BRAKES AND NOTICED SMOOTH INCREASE IN PRESSURE AS SHOWN ON BRAKE PRESSURE GAUGE. DURING TAXI, APPLIED AND RELEASE BRAKES MANY TIMES WITH NO DEFECTS.