A more stringent maintenance response than that for an isolated track geometry defect was not considered or implemented in accordance with ARTC’s COP. A more stringent maintenance response should have been considered given the degraded formation and the track’s rapid deterioration between 12-14 January 2016, two days prior to the derailment
Since the derailment of train WG713, ARTC has:
The Australian Transport Safety Bureau notes the response provided and is satisfied with the action taken by ARTC.