TIMS showed BCU WSP Timer 1 activated fault at rear DT car. Fault was intermittent. ~~~~~ TIMS showed BCU WSP Timer 1 activated fa   #3682 found tachogen 1 impedence fluctuating. OPS 20 raised to replace tachogen, awaiting spare from TWD. Done by: Koh, Rizman (30/07/23) #3682 Follow uo Tacho Gen No.1 spare c/o   #3682 found tachogen 1 impedence fluctuating. Replaced tachogen no. 1 and checked impedence ok. Notification to CSC: 2510911 Done By: Koh, Rizman (31/07/23)