Liknande fel med dödlig utgång och samma konstruktör:
https://en.wikipedia.org/wiki/Mindbender_(Galaxyland)
Mindbender accident
Date June 14, 1986
Type Rollercoaster derailment
Deaths 3
Non-fatal injuries 1 critical; 19 treated
Property damage Faulty wheel assembly; rear roller coaster car that slammed into a pillar
On the evening of 14 June 1986, the fourth car of a train travelling midway along the course derailed before encountering the third and final loop.[6] Its wheel assembly had become detached from both the track and car itself, causing the car to sway back and forth across the tracks.[6] The car became damaged, and the lap bar restraints unlocked and released, throwing all four of its passengers to the concrete floor below. The train continued to move along the track and into the final loop, but friction from the car's derailment slowed the train and prevented it from clearing the loop. As it rolled backward down the loop, the detached car crashed into a concrete pillar about midway down, stopping the train abruptly. Three of the four passengers thrown from the ride died, while the fourth was left critically injured with permanent, life-altering effects. The remaining passengers were safely evacuated and treated at a nearby hospital with minor injuries. An investigation later determined that four cap screws holding the wheel assembly together failed, which were likely the result of design flaws and unsatisfactory maintenance routines.