As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED DURING LANDING ROLL AND MANUAL BRAKING, THE RIGHT BRAKE PEDAL PULSATES HARD TO KEEP FOOT ON BRAKES SO BAD IT INCREASES LANDING ROLL. DECREASES WITH LOWER SPEED BUT CONTINUES DOWN TO 60 KNOTS. SMOOTH WITH AUTOBRAKE. THIS STARTS WHEN AUTOBRAKE KICKS OFF. MAINTENANCE REPLACED RIGHT OUTBOARD ANTI-SKID VALVE PER AMM 32-42-31. ALSO, REPLACED ALTERNATE BRAKE SELECTOR VALVE AND PRESSURE SWITCH PER AMM 32-41-93-404-040.