2522-BRAKE FAULT DURING TRAIN.PREP. ~~~~~ 2522-BRAKE FAULT DURING TRAIN.PREP.  2522 BCU Swapped With 1522 2521 ACU Swapped With 2522 Installed New ACU Onto 2521 1521 Found ACU With Intermitent Fault - Replaced With New But Fault OS, Opr 20 Raised         Old         New 1521  037/047    1032/040 2521  1310/143   1302/127 Selvan/Lee PT 43964 To follow up  1521 ACU Replaced. Tested Operation & Security Checked - OK Old: 1032/040 New: 1008/004 Boopathy/Nelson 43964