ATS alarm showed train door status lostmomentarily when train was travelling in between stations. F ault recurred intermittently thereafter. TC reported of inte rmittent DIR indication but no DMI or any indication on TIMS ~~~~~ 3542 ATS alarm showed train door status lost momentarily when train was travelling in between stations. Fault recurred intermittently thereafter. TC reported of intermittent DIR indication but no DMI or any indication on TIMS.  3541 B/S cab door found screws securing the latch were loose & retightened the screws. Function check cab door open/close operation - OK.  Anand/Kiran/Eden 44597