As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI-OUT OF FLIGHT 7499, AIRCRAFT RETURNED TO THE GATE DUE TO THE FIRST OFFICER'S RIGHT BRAKE PEDAL HAD INSUFFICIENT PRESSURE. TROUBLESHOOTING THE SYSTEM THE MECHANIC BLED THE LOW PRESSURE LINES IAW JIC32-42-00 BLD 10000, THE SYSTEM CHECKED GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.