TC feedback BCU comms fault at Front DTcar. After departing YCK SB train was slow in acceleration w ith brake fault indication lighted. TSC stopped now the trai n and TC proceeded to operate STBS and move in ATPM to disem ~~~~~ L3   #3660 Stuck brake. Fault code 307/301/308. Replaced BCU and brake cyclic test ok. BCU-Old s/n: 1449094. New s/n: 1544290. Not: 2222191 raised. Done by Zulq/Haslan/Asruddin. 22/11/20.