The Commission is investigating an incident involving the TranzAlpine service on 5 August 2025. The reported circumstances were that the train was travelling towards Christchurch. The train had passed through Otira tunnel when the locomotive engineer reported diesel leaking onto the running board of the lead locomotive.
Executive summary Tuhinga whakarāpopoto
The Commission is investigating an incident involving the TranzAlpine service on 5 August 2025. The reported circumstances were that the train was travelling towards Christchurch. At Arthur’s Pass station after passing through Otira tunnel, the locomotive engineer reported diesel leaking onto the running board of the lead locomotive DXC5379.