As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3576 - REQUIRES A LOT OF RIGHT FOOT PRESSURE TO GET THE RIGHT BRAKES TO ACTIVATE. SEEMS AT TIMES THERE IS LITTLE OR NO RIGHT BRAKE. REMOVED AND REPLACED CUT O-RING ON NR 4 BRAKE BLEED PORT TO HOUSING FITTING. BLED RIGHT BRAKE ASSY. LEAK AND OPERATIONAL CHECK NORMAL. (X)