1989 Wentworthville derailment
The 1989 Wentworthville derailment was a fatal derailment that occurred on the Main Western railway line in Sydney on 27 December 1989. The accident resulted in 1 death and 7 injuries and was the first major incident involving a Tangara set, which had entered service with CityRail the previous year.
Source: Wikipedia — 1989 Wentworthville derailment (CC BY-SA 4.0)