The operator of the business that supplied inflatables on the day of the Hillcrest Primary School jumping castle tragedy has appeared as a witness in the coronial inquest. . newsiviewlistenLoading ABC NewsNews HomeJumping castle owner appears at inquest into Hillcrest 2021 tragedyShareShare articleJumping castle owner appears at inquest into Hillcrest 2021 tragedyBy Sandy Powell. A teddy bear and flowers left at Hillcrest Primary School following the tragedy.