Train door at Front M1 car were not proven closed. TC recycled train doors once - ok. Fault did not recur at subsequent stations. Train door at Front M1 car wer e not proven closed. TC recycled train doors once - ok. Faul ~~~~~ 1)fod found no.2)weather strip /roller condition ok.3)clen j rail/guide rail yes.4)push/pull door smooth and no wobble yes.5)door cyclic test 20x dir extingusher ok yes.6)tims door  static timing test pass yes.unable to duplicate fault.ETHAN 31.10.2022