1530-BCU FAULT DURING TRAIN PREP.TO RECT ~~~~~ 1530 BCU FAULT DURING TRAIN PREP.  1530 FC D/L & found FC 308/330/312/331. Replaced ACU on #1530. Brake status & brake pressure check - OK.  Chan GF/Shafie 44435 #1530 ACU S/N : OLD : 1008/002 NEW : 1037/055