According to the Izvestia newspaper, the incident took place on the afternoon of Saturday, August 6.
The girl flew out of the chair while riding the Orbita attraction.
The victim was hospitalized with a serious head injury.
Despite the efforts of doctors, she died.
The reasons for the incident are being investigated.
Earlier, the head of the Investigative Committee of Russia, Alexander Bastrykin, took control of the case of injuring a child in one of the amusement parks in Mineralnye Vody.