TC feedback DIR indication light flashing intermittenty when train is moving in between station. ~~~~~ TC feedback DIR indication light flashin     Check and found #3527-B/S cab door gap out of criteria.Further check found cab door double latch screw loose and cause DIR intermittent lit.Secure double latch mounting and function check DIR ok.overlapping and DIR s/w within criteria. Done by Sanip/Rizman/Koh. 02/05/23