As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON BRAKE APPLICATION, NO BRAKING UNTIL TOP OF PEDALS ARE DEPRESSED APPROX 2.5", THEN SUDDENLY 500LBS OF PRESSURE, BRAKES GRAB SUDDENLY. PERFORMED BRAKE BLEEDING PROCDURES WITH LT HYD SYS PRESSURE. NOTED AIR PRESENT WHILE BLEEDING BRAKES. ACCOMPLISHED BRAKE BLEEDS UNTIL AERATION WAS NO LONGER PRESENT. NOTED NO DEFECTS POST BLEEDING ACCOMPLISHMENT, REF MM 32-44-00.