As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NUMBER 3 BRAKE 60 NUMBER 4 BRAKE 390. ACTUATED RT BRAKE AND WITNESSED PUCK MOVEMENT ATTEMPTED BRAKE BLEED OF NORMAL AND ALTERNATE SYSTEMS AND GOT GOOD FLOW OUT OF GREEN BLEED PORTS NO FLOW OUT OF YELLOW BLEED PORTS RENDERED NR 3 MLG BRAKE YELLOW SYSTEM INOP PER MEL 32080.