Intermittent BCU fault at RDT car. ~~~~~ #3655 FC 322/323 Check tacho 1-4 impedance ok. Dump v/v check ok. Preventive measure replace BCU and WDC setting done. BCP within criteria and brake cyclic tested ok. BCU-New s/n: 1823057  Old s/n: 1847-408 Not: 2276889 raised to RSW. Done by Saini/Asruddin/Haikel  17/5/21.