As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 7783, IAD TO PIT. UPON LANDING THE FLIGHT CREW APPLIED BRAKE PRESSURE ALONG WITH DEPLOYING REVERSERS TO SLOW THE ACFT, AND NOTICED DEGRADED BRAKE PERFROMANCE. FULL BRAKING WAS APPLIED WITH LOWERED EFFECTIVENESS UNTIL AT A SLOW TAXI. THE ACFT TAXIED TO THE GATE WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT THE FAULT TO THE BRAKE CONTROL UNIT NOT OPERATING THE OUTSIDE BRAKE ASSEMBLIES. AFTER REPLACING THE BCU THE AIRCRAFT TAXIED NORMALLY. (S)