3546 BCP ABNORMAL om event logs observed, 3546 BCP ABNORMAL at 1723hrs and 1805hrs ~~~~~ 3546 BCP ABNORMAL     Check Tims #1546 FC-312,330,308,331.Further check found #1546 ACU abnormal air leak through brake frame silencer.Swap ACU to #1545 faultb transfer.Replace ACU and function test ok. Done by Sanip/Koh. ACU- New s/n: 1047-080 Old s/n: 1301-121 Not: 2334437 raise.    Done by Sanip/Koh. 23/11/21