Kingda Ka, Six Flags Great Adventure, New Jersey, USA

A man suffered neck and face injuries when a bird flew into his face while on the coaster. Source

Vampire, Six Flags La Ronde, Québec, Canada

A maintenance worker was struck by the coaster’s moving train and killed instantly after he entered a restricted area. Source

Commander, Bremer Osterwiese, Bremen, Germany

Two passengers were injured when an gondola ripped from its swing arm. A similar accident happened in May 2010, injuring nine on-lookers. This time a cable prevented the gondola from leaving the ride platform. Source (in German)

Dragon Challenge, Islands of Adventure, Florida, USA

Only weeks later after a similar incident, another rider was hit by a mystery object on the coaster. This time they reported being hit in the foot, arm and face which drew blood. Following the two incidents, Dragon Challenge will never duel again. Source