Incidents at Six Flags parks
The following is a summary of notable incidents at any of the amusement parks and water parks operated by Six Flags Entertainment Corporation. In some cases, these incidents occurred while the park was under different management or ownership.
This list is not intended to be a comprehensive list of every such event, but only those that have a significant impact on the parks or park operations, or are otherwise significantly noteworthy. The term incidents refers to major accidents, injuries, or deaths that occur at a park. While these incidents were required to be reported to regulatory authorities due to where they occurred, they usually fall into one of the following categories:
- Caused by negligence on the part of the guest. This can be refusal to follow specific ride safety instructions, or deliberate intent to violate park rules.
- The result of a guest's known, or unknown, health issues.
- Negligence on the part of the park, either by ride operator or maintenance safety instructions, or deliberate intent to violate park rules.
- Act of God or a generic accident (e.g., lightning strike, slipping and falling), that is not a direct result of an action on anybody's part.
- 1 Great Escape
- 2 La Ronde
- 3 Six Flags America
- 4 Six Flags AstroWorld
- 5 Darien Lake
- 6 Six Flags Discovery Kingdom
- 7 Six Flags Elitch Gardens
- 8 Six Flags Fiesta Texas
- 9 Six Flags Great Adventure
- 10 Six Flags Great America
- 11 Six Flags Kentucky Kingdom
- 12 Six Flags Magic Mountain
- 13 Six Flags Mexico
- 14 Six Flags New England
- 15 Six Flags New Orleans
- 16 Six Flags Over Georgia
- 17 Six Flags Over Texas
- 18 Six Flags St. Louis
- 19 Six Flags White Water
- 20 Six Flags Worlds of Adventure
- 21 References
- On June 24th, 2017, a 14-year-old girl from Greenwood, Delaware fell approximately 25 feet (8 m) from her gondola, striking a tree before falling to the ground. The girl had slipped under the chair's safety bar while the ride was in motion. The ride was stopped when park visitors alerted the operators to the incident, while other visitors gathered underneath the girl to prepare to catch her. She ultimately fell into the group of visitors below her, with an unidentified 47-year-old man receiving a back injury from the attempt. The passenger received no serious injuries, and was taken to a local hospital. Park officials stated there did not appear to be a malfunction of the ride, but closed the ride pending review.
- On July 6, 2012, a 67-year-old employee of the park was killed at Le Vampire. The employee was reportedly found underneath the attraction in a restricted area, appearing to have suffered head trauma. Park officials stated that the employee had been struck by the roller coaster. The employee was pronounced dead at the scene; another individual was taken to a hospital to be treated for shock. Officials with the park did not know why the employee entered the restricted area of the ride while it was operational, but they did state that the ride was operating normally and that procedures for entering restricted ride areas, including notification of ride staff, had not been followed.
Six Flags America
The Joker's Jinx
- On August 10, 2014, at about 3pm, 24 people were trapped on the roller coaster when the train stalled along the course. The train was upright on a curve near one of the highest points on the ride. The local fire department used an aerial fire apparatus to bring down riders one at a time. By 7:30pm local time, all riders had been removed from the ride, which was immediately closed for investigation. Investigators claim that the stalled train was caused by debris on the track. No riders were injured, and all were evaluated by emergency personnel.
- On April 13, 2017, at a little before 6pm, the ride stalled along the same length as the 2014 incident. 24 riders were stuck on the train, and firefighters rescued all the riders with the use of an aerial fire apparatus by 9:20 PM, more than two hours after the park's closing and almost four hours after the train got stuck.
- On June 28, 2000, eight people were trapped when their raft fell off during the ride. All riders escaped but two were injured.
Superman: Ride of Steel
- On June 18, 2018, 24 passengers were helped off the ride's lift hill after sensors automatically stopped the ride. No injuries were reported.
- On June 13, 2018, a 14-year-old boy was admitted to the hospital in critical condition after he was rescued from the Wave Pool. Park staff and paramedics treated the boy before he was transported to the hospital. 
Park Bomb Scare
- On July 13, 2016, a bomb threat was called in right before the park opened. The Prince George's County Fire Department bomb squad and security personnel were deployed around the park and found two unattended backpacks that were determined not to be explosive. The all-clear was announced after a search of the park around 2:45 p.m. Six Flags announced that the park would be open until 8 p.m. that evening.
Six Flags AstroWorld
- On August 9, 1997, a 51-year old maintenance worker was killed after being struck by a roller coaster train. The man was working on a section of track when the train was sent out for a test run and struck him along its way. A signal had indicated to the man that the track was clear.
- On October 19, 2003, seven people were treated and released from a local hospital after a wooden board fell into the middle of a roller coaster train while the ride was running.
- In 2001, a 13-year-old boy was ejected from the ride due to a faulty lap bar and suffered broken bones in his head, pelvis and legs.
- On September 6, 2009, the body of a Pennsylvania man, William Sutherland, who had been reported missing the day before was found in one of the small lakes inside the parking lot. The cause of death was not determined.
- On May 13, 2018, an arm rest broke off one of the chairs while the ride was moving. No injuries were reported to any of the guests who were using it. Since then, it has been replaced with a new one.
Ride of Steel
- On May 16, 1999, a 37-year-old, 5-foot-6, 365 lb (165 kg) male guest was unable to close his lap bar properly and was ejected and fell approximately 9 feet (3 m) from the Ride of Steel roller coaster as the ride went over a "camel hump" hill, suffering serious injuries. The victim sued the park and the ride manufacturer Intamin for negligence, and was awarded US$3.95 million.
- On July 8, 2011, a 29-year-old guest was killed when he was ejected from the Ride of Steel roller coaster. The rider, an Iraq War veteran whose legs had been amputated, was on the front row of the roller coaster when he was thrown from the train during the course of the ride. Park officials stated that the ride was in proper mechanical order and that the various safety restraints were also working normally at the time of the incident, but that the attraction would remain closed pending an investigation.
- On October 1, 2017, a malfunction left cars swinging, injuring a few guests.
Six Flags Discovery Kingdom
- On January 5, 1996, two trainers were attacked by cougars during an exercise session. One trainer was in the cougar enclosure to take one of the animals for a walk. The cougars, Zuni and Tonto, had been playing among themselves and began aggressively playing with him, causing severe cuts on his face and upper torso. The backup trainer suffered minor cuts and bruises in his attempt to free the other.
- On July 31, 1998, Kuma, a two-year-old Bengal tiger, attacked and seriously injured a guest from San Jose, California, and slightly injured the trainer. The incident happened in a secluded area of the park set up to do private photo sessions with the big cats. The tiger was apparently startled when the guest fell off the photo platform and landed on top of her. The trainer suffered a clawing while trying to free the guest who had received serious injuries to her head and upper torso.
- On June 2, 2004, a 23-year-old African elephant named Misha gored her trainer while in her enclosure as the trainer walked beside her. This was Misha's second aggressive act following a previous swipe at a trainer two years prior.
- On August 25, 1999, 28 passengers were stranded on the Boomerang ride for several hours. The shuttle that pulled the train up an incline failed to release the train. Employees were eventually able to fix the problem and started the coaster. It successfully went around both loops on its first run, but stalled upside down at the peak of one of the loops on its way back and idled there for many hours. Riders, suffered from cases of severe dehydration and sunburn, were rescued by firefighters in an aerial fire apparatus.
- On August 25, 2018, a fight broke out inside the park between five people, who were all arrested for causing a disturbance while a police officer suffered minor injuries.
- On August 15, 2001, a 42-year-old woman suffered brain hemorrhage after riding the attraction and died at a hospital two days later from her injuries.
- On September 4, 1999, a nine-year-old boy was injured when he slipped below the restraining bar on the Scat-a-bout, a twister ride. The boy was thrown from the ride and landed in a nearby planter, receiving cuts on his legs. The park later stated that the accident was the result of the boy intentionally sliding beneath the safety restraint.
- In May 2001, a 41-year-old woman from Antioch, California was thrown from the ride when a restraining bar failed as the result of a pneumatic valve being incorrectly installed. She landed on the pavement and suffered head and knee injuries. Her later lawsuit named both the park and ride manufacturer Chance Rides as responsible parties.
- On June 8, 2002, a 4-year-old girl was critically injured when she slipped beneath the restraining bar and fell from the Starfish ride while riding with her mother, receiving critical head injuries. Investigators later blamed park employees for incorrectly seating the girl and not having proper signage indicating the proper seating arrangement for a larger and smaller rider.
Superman: Ultimate Flight
- On July 28, 2012, 12 passengers were stuck on the ride 150 feet in the air for 2 hours. No injuries were reported.
Six Flags Elitch Gardens
Six Flags Fiesta Texas
- On July 8, 2000, seven people were injured after a chlorine spill. They were all taken to local hospitals and released without any serious injuries.
Batman: The Ride
- On March 13, 2018, passengers were stuck on the ride for 45 minutes when one of the sensors accidentally triggered. No injuries were reported.
- On July 11, 2007, a 37-year-old man was charged with improper photography and recording after allegedly acting suspiciously with a video camera by secretly filming young girls in the water park section. Reports have said he was trying to film someone without permission in an attempt to arouse or gratify the sexual desire of a person.
Boomerang: Coast To Coaster
- On June 4, 2008, passengers had to evacuate when the ride got stuck mid-ride for one hour.
- On June 12, 2007, a 14-year-old girl was paralyzed after she fell into a gap between the roller coaster's cars, landing on a concrete floor about 10 feet (3 m) below the platform. Family members stated that she may have fainted due to the heat of the day.
- On August 28, 2010, two people were stuck on the Poltergeist for two hours.
Six Flags Great Adventure
- In May 2004, the ride malfunctioned when one of the ride's 200 electric motors began smoking. The ride was shut down for 45 minutes
- On August 18, 2004, lightning struck a power substation near the park, causing a power cut to the park. Twenty passengers on The Chiller were left stranded on the ride, approximately 75 feet (23 m) above ground, for 40 minutes. The train's angle was such that eight passengers were upside-down. No injuries were reported. Only the Robin side was operational at the time of the incident. 
- On September 13, 2015, a girl from Gibbstown, New Jersey was injured when her safety restraints came undone as the ride started. As she exited the ride, it was shut down for technical difficulties. Two years later in 2017, her family filed a lawsuit to the park claiming that the staff didn't check them before they were secure.
- On April 19, 1987, an unidentified gunman fired several shots into a crowd on the plaza inside the main gate, wounding one man and sending panicked guests running for safety. It was the third violent incident of the day, following two earlier unrelated stabbings. The park was evacuated a few minutes after the shooting, about an hour earlier than its scheduled 8:00 p.m. closing time. Park officials modified security after the incident, including adding metal detectors at the park's entrance.
- On May 11, 1984, eight teenage visitors were trapped in the Haunted Castle attraction, and died when it was destroyed by fire. Six Flags Great Adventure and its parent company Six Flags were subsequently indicted for aggravated manslaughter, accused of recklessly causing the deaths by taking inadequate precautions against a fire. In the subsequent trial, the prosecution argued that repeated warnings by safety consultants to install sprinklers or smoke alarms had been ignored. The defendants denied any culpability, and contended that the fire was arson and that no precautions would have saved lives. The trial jury found the defendants not guilty. A light bulb had burned out in one of the rooms of the attraction, and a 14-year-old boy lit a cigarette lighter to find his way through the darkness. The flame ignited some foam rubber padding which was used to protect people from bumping into a wall. A fire resulted, which quickly spread throughout the 17-trailer structure with the help of extremely flammable building materials. The fire eventually engulfed and totally destroyed the attraction.
- In August 2015, a woman broke her ankle while riding the King Cobra water slide with a friend using a double tube, which was prohibited from riding. They both exceeded the 200-pound weight limit and slammed into the snake's mouth. She sued the park for $3 million for negligence in 2016. The water slide was closed in 2017, later being dismantled in 2018 and never re-opened afterwards.
- In June 2016, a Philadelphia man received multiple injuries to his foot and knee while riding, when his leg struck a bar attached to the coaster. The victim sued the park for negligence in May 2018.
- On June 8, 2005, a bolt failed inside a trough that the launch cable travels through. This caused the liner to come loose, creating friction on the cable and preventing the train from accelerating the correct speed. The rubbing of the cable against the inside of the metal trough caused sparks and shards of metal to fly out from the bottom of the train. The ride was closed for almost two months following the incident, but later reopened on August 4.
- On August 27, 2011, at the same time when the park was closed during Hurricane Irene, a storm which occurred in late August of 2011, the ride was almost completely damaged due to the storm's strong gust of winds. It remained closed for more than 8 months until being reopen again to the public on April 5, 2012 during the start of the 2012 operating season.
- On July 26, 2012, a 12-year-old boy from Howell Township, New Jersey was struck in the face by a bird while riding the roller coaster. He was taken to a nearby hospital and suffered minor injuries.
- On June 17, 1987, a 19-year-old woman was killed after falling from the Lightnin' Loops shuttle loop roller coaster. An investigation by the State Labor Department concluded that the ride itself was operating properly, but that the ride operator started the ride without checking that all of the passengers were securely fastened by the safety harnesses. The Department's Office of Safety Compliance further concluded that the accident would not have occurred if proper procedures had been followed. The park was found to be in violation of the Carnival/Amusement Ride Safety Act and was subsequently charged with the maximum state fine of $1,000.
- On August 16, 1981, a 20-year-old park employee from Middletown Township, New Jersey fell to his death from the Rolling Thunder roller coaster during a routine test run. An investigation by the New Jersey Labor Department concluded that the man may not have secured himself with the safety bar. A park representative later confirmed this conclusion, saying that the employee "may have assumed an unauthorized riding position that did not make use of safety restraints." The ride was inspected, and the Labor Department concluded that the ride was "operationally and mechanically sound."
- On June 3, 2018, 32 passengers were stuck on the ride for 15 minutes when the attraction stopped at about its mid-point due to safety sensors detecting an error and applying an emergency brake. No injuries were reported.
- On November 11, 2018, guests were stranded about 120 feet in the air for nine minutes when safety sensors detected an error and shut the ride down. No injuries were reported.
Six Flags Great America
From 2004 to September 2007, the Occupational Safety and Health Administration (OSHA) inspected Six Flags parks five different times and found a total of four violations. On September 10, 2007, OSHA cited Great America with 38 safety violations, alleging "multiple serious and repeat violations at the amusement park, ranging from defective emergency brakes on an industrial truck to a lack of labeling procedures for preventing inadvertent machine start-ups." OSHA fined the park US$117,700.
- On July 19, 2000, a 12-year-old girl from McHenry, Illinois suffered two crushed toes after the floor of the ride was improperly raised prior to the ride coming to a complete stop. A second guest also had her foot trapped in this accident. The ride was permanently shut down as part of an out-of-court settlement. In the ten years prior to this accident, there were thirteen other reported incidents involving the Cajun Cliffhanger ride, at least six of which involved injuries.
- On April 18, 1998, 23 riders on the Demon roller coaster were stranded upside-down in the middle of the ride's second vertical loop. Firefighters used an aerial fire apparatus to bring riders to safety, although some were on the ride for as long as three hours. The incident was the result of a mechanical failure.
- On May 22, 1984, three teenage boys were seriously injured when the ride vehicle fell back down the lift shaft.
- On June 29, 2005, a 68-year-old guest from Chicago, Illinois, had a heart attack and died in the wave pool.
- On May 29, 2004, a 52-year-old ride mechanic from Zion, Illinois, was killed by a roller-coaster car as he attempted to cross the tracks. Suffering from a traumatic head injury, he died at Froedtert Hospital in Milwaukee.
- On May 3, 2003, an 11-year-old girl from Gary, Indiana, collapsed after riding the Raging Bull coaster while on a trip with her sisters, cousins and aunt. She died after being taken to the hospital. While initial reports said that she died from choking on chewing gum she had been chewing while on the ride, the coroner's report later stated that she died due to cardiomegaly, and had been seeing a cardiologist for treatment.
Sky Trek Tower
- On June 21, 2015, the ride stopped in the middle of the tower. Guests were stranded for two hours and had to be evacuated down a staircase. No injuries occurred.
Spacely's Sprocket Rockets
- On August 16, 2006, a 10-year-old girl from Arlington Heights, Illinois, collapsed and died after riding the Spacely's Sprocket Rockets roller coaster in the Camp Cartoon Network area. An autopsy showed that she died of a congenital heart anomaly. Her family said that she had a history of the anomaly.
Superman: Ultimate Flight
- On September 9th, 2017, a 50-year-old man from Andersonville, Indiana died after riding the flying roller coaster. Exiting the attraction, the man complained of feeling sick, then collapsed on the ramp. He was taken to a nearby hospital, where he later died from what was termed a "natural death".
- On June 25, 1997, a 14-year-old Waukegan boy injured his arm while dangling it outside the car. His limb got caught between the car and the platform as the ride reentered the station and slowed to a stop.
- During a 1980 investigation of an accident at the Great America park in California of their Willard's Whizzer coaster, the U.S. Consumer Product Safety Commission discovered two incidents at the Illinois park that had not been previously reported: on July 24, 1976, 13 guests were injured; and on August 18, 1976, 18 guests were injured. The CPSC report does not list injury or accident details for either incident.
Six Flags Kentucky Kingdom
Six Flags Magic Mountain
- In 2006, there were 109 complaints by Magic Mountain guests due to various incidents, according to an annual report from the Amusement Safety Organization. Reports ranged from nosebleeds and heat exhaustion, to neck and back injuries from various rides. Included in those 109 complaints were 18 reports of people blacking out on the Goliath roller coaster. Other complaints were safety-related, such as notices of ride operators talking on cell phones while operating rides. The report stated that the state of California received notice of 80 injuries at Magic Mountain between January 2001 and December 2006.
- In 1978, a 20-year-old woman died after falling out of the ride. The lap bar was locked in place but it proved to be ineffective, due to the woman's obesity. One of the old cars has been sent to the Sky Tower. This incident prompted Colossus to be closed for a year while the trains were switched out and other adjustments were made.
- On September 8, 2014, a fire broke out atop Colossus's lift hill. The ride had already been closed down for conversion into Twisted Colossus, and no injuries or deaths were reported. The fire was caused by welders working on removing track. The fire was an accident, and no one was taken to court.
- On February 5, 1978, a gondola car on Eagle's Flight traveling the Galaxy course fell 50 feet (15 m) to the ground. A pair of newlyweds were violently rocking the car back and forth, causing it to detach from the cable. The husband was killed, and his wife suffered serious injuries, including losing her legs.
- On June 2, 2001, a 28-year-old woman died of a brain aneurysm while riding Goliath. Her family sued the park, claiming that managers were aware of other complaints from Goliath riders and continued to operate the coaster anyway.
- On April 4, 2015, one of Goliath's trains got stuck on the lift hill during a test run due to a chain malfunction which needed an entire chain replacement. The train was eventually brought down and the ride remained closed until the lift hill was fixed. The ride eventually reopened on July 18, 2015.
- On September 30, 2012, a 19-year-old man fell from the Venom Drop water slide. According to a spokesperson for the water park, the man cut in line at the slide, fought through the lifeguards, and jumped onto the slide head-first. The man tumbled onto the slide and slipped over the edge, falling 60 feet (18 m) onto a fence below the slide tower. The local sheriff's office reported that the man was transported to an area hospital with life-threatening injuries.
- On August 30, 2008, a 20-year-old man was hospitalized after being hit by the train and knocked unconscious when he allegedly climbed multiple security fences to retrieve a hat. Airlifted to the UCLA Medical Center, he was pronounced dead at 2 a.m. on the following day, due to blunt force trauma.
- On July 7, 2014, 22 guests were stranded for over two hours after a tree branch fell onto the coaster track. Four of the 22 guests were injured, but none serious enough to require a hospital visit.
- On May 30, 1996, an employee was killed while crossing the tracks in the roller coaster's station. She slipped and fell into a shallow pit beneath the tracks and was struck by a train that was pulling into the station.
- On June 13, 2015, a 10-year-old girl was found unconscious but breathing after returning to the roller coaster's station. She died the following day at a nearby hospital. A coroner's report said the girl died from natural causes.
- On April 9, 2004, a 21-year-old ride operator died after being struck by the roller coaster while underneath the track during a test run prior to the park's opening that day. The roller coaster was allowed to be re-opened the next week after an OSHA inspection found no mechanical issues.
Six Flags Mexico
- On June 8, 2014, around 10 a.m., a fire broke out in a warehouse of stuffed animals. Injured men and women were evacuated, leaving a 500-meter area affected. It has been established that the cause of the fire was due to a short circuit. At the time of the fire the park was closed.
Six Flags New England
Houdini's Great Escape
- On October 9, 2010, Houdini's Great Escape (which was being used as a haunted house called Midnight Mansion), which was available during Fright Fest, suspiciously caught on fire. Firefighters were called to extinguish the flames, but the ride was closed for the rest of the night and the following day. Investigations showed that a flammable cobweb hanging on the top of the building was the cause of the fire after coming in close contact with a light fixture. Nearly 20 feet (6 m) of cobweb burned up, and the building only suffered minor damages to the roof and exterior. No one was injured, but damages were estimated at $5,000.
Superman: The Ride
- On August 6, 2001, one of the trains failed to stop at the ride's brake run, colliding with the other train in the loading station. 22 people were taken to hospitals, without any major injuries. The ride would reopen twelve days later on August 18, 2001.
- On May 1, 2004, a 55-year-old, 5-foot-2, 230 lb (104.5 kg) man from Bloomfield, Connecticut fell out of his coaster seat during the last turn and was killed. Reports show that the ride attendant had not checked that the guest's ride restraint was secure as his girth was too large for the T-bar-shaped ride restraint to close properly. The victim's family said that due to his various medical conditions, such as cerebral palsy, he shouldn't have been allowed to ride. The park stated that the federal Americans with Disabilities Act forbids them from denying a ride to a person with a disability as long as the person can get on the ride by themselves.
- On August 7th, 1999, a raft carrying six people flipped, trapping some riders under water. All six riders were injured.
Six Flags New Orleans
- On July 10, 2003, a 52-year-old grandmother was strapping her 4-year-old grandson in when the ride started up. She died from blunt-force internal injuries after being struck by a ride vehicle. The park added mirrors to the ride for ride operators to view around the blind spot where the accident occurred, and then introduced a safety announcement which notified the guests that the ride was about to start.
Six Flags Over Georgia
Batman: The Ride
- On May 26, 2002, a 58-year-old Six Flags foreman was struck in the head and killed by the dangling legs of a passenger after he wandered into the ride's path after entering a locked, no-access area during the ride's operation. The passenger, a 14-year-old girl, was hospitalized with leg injuries and released.
- On June 28, 2008, a 17-year-old male from Springfield, South Carolina was decapitated by the passing train after he climbed over two six-foot fences and entered a restricted area. Reports said that the victim was trying to retrieve his lost hat. Additional eyewitnesses stated that the victim and a companion, who also entered the restricted area but was uninjured, were trying to take a shortcut back into the park after leaving the park for lunch.
- On July 27, 2006, a 45-year-old male from Birmingham, Alabama, died of a heart attack after riding Goliath. He was alert during the ride but was unconscious when the train arrived at the loading platform. An autopsy showed that the man had a congenital heart condition, and it was expected that the medical examiner would announce that he died of natural causes. Goliath was closed for two hours for an inspection, but was found to be operating normally.
Great Air Racer
- On May 27, 1984, four passengers were injured after a computer malfunction caused the ride's cables to drop the planes out of position.
Six Flags Railroad
- On May 13, 2018, the train engine caught fire. Two employees were taken to the hospital, and while no park guests were on the ride at the time of the accident, one park guest was treated at a local hospital.
- On June 3, 1984, a mechanical problem caused a train to stop abruptly, causing four people to be hospitalized. The ride was repaired and put back into service with no more problems.
- In May 2009, four children became ill when the attraction failed to stop at the end of its cycle. After returning to a horizontal position, a limit switch failed and the ride continued to spin for five to ten minutes. The park's first-aid staff treated the children, while one was transported to an area hospital by his parents; the child was not admitted, however. An investigation determined that the ride operator did not engage an emergency stop switch due to a miscommunication between her and her supervisor; the park's ride operators are trained in how to stop their rides in the event of a malfunction. Since then, additional safety features have been added to ensure that the attraction automatically stops within 15 seconds if the limit switch were to fail.
- On July 18, 1989, an 11-year-old boy from Talladega, Alabama, became unconscious while riding Z-Force. Park staff performed CPR, but the victim was pronounced dead after being taken to the hospital. An autopsy failed to pinpoint the cause of death.
Six Flags Over Texas
- In the early hours of May 20, 2017, eight passengers were stuck for several hours when heavy winds caused their car to stall out on the top section of the track. Fire department crews assisted in rescuing the riders about three hours after the stoppage. No injuries were reported. The park inspected the ride and re-opened it to the public on May 21.
- On March 21, 1999, a 28-year-old Arkansas woman died, and 10 other guests were injured, when the raft they were on overturned in 2–3 feet of water due to sudden deflation of the air chambers that support the raft. The raft then became caught on an underwater pipe, which provided leverage for the rushing water in the ride to flip the boat over. In a subsequent settlement, Six Flags agreed to pay US$4 million to the victim's family, and the company said it would join the family in a lawsuit against Canyon Manufacturing Co., the company responsible for parts that were related to the accident.
New Texas Giant
- On July 19, 2013, a 52-year-old woman from Dallas, Texas, fell 75 feet (23 m) to her death while riding the New Texas Giant roller coaster. According to one eyewitness account, the victim – described as overweight – was concerned about being properly secured after boarding the ride. She heard other restraints click three times but only reported hearing hers click once. A ride attendant assured her that as long as she heard a click, it was secure. Some riders informed investigators that the woman was thrown from the roller coaster as it rounded a turn, and one rider tweeted that he saw the restraint come undone. Other eyewitnesses believed the seat restraint remain locked in the lowered position when the train returned to the station. The ride closed for two months during the investigation. The victim was found on top of the metal roof of one of the coaster tunnels, near the Music Mill Amphitheater. Due to its similarity to Texas Giant, Iron Rattler was closed temporarily by Six Flags Fiesta Texas following the incident. It reopened almost a month later with added seat belts. Representatives from Gerstlauer, the German company that designed and built the ride's trains, participated in the investigation. While Gerstlauer would not discuss any specifics, they released a statement saying their restraint system could not open while the ride was in motion. The investigation was completed on September 10, 2013, and Texas Giant reopened on September 14, 2013. Each train's restraint system was modified, seat belts were added, and a seat replica was placed at the entrance allowing riders to test before waiting in line. The woman's family filed lawsuits against both the park and manufacturer, both of which blamed and sued each other for the accident. On November 18, 2014, attorneys for the victim's family announced that they had reached an undisclosed settlement with both Six Flags and Gerstlauer, with a spokesperson saying the family "is very pleased with the settlement and appreciates the condolences offered by Six Flags and Gerstlauer".
- On August 9, 2012, six lifeguards suffered minor injuries on the Tornado water slide during a training session. Park officials say it was the result of 'inappropriate horseplay'.
Texas Tornado (Now known as The Gunslinger)
- On March 12, 2006, ten people suffered minor injuries when the Texas Tornado, a Chance Rides Manufacturing "Yo-Yo" attraction, was brought to an abrupt stop and several swing seats collided with each other. Five people were sent to the hospital after complaints of back pain, the others were treated at the on-site first aid station. In October 2008, Chance recalled 85 Yo-Yo rides to repair defects that were found in this accident and one other.
Six Flags St. Louis
- On May 6, 2016, the Boomerang came to an abrupt halt. The park was closed at the time, but groups of high school students were at the park on field trips. Four students suffered minor injuries, but were able to get off the ride. Three of the students were taken to a nearby hospital as a precautionary measure, though no one was seriously injured.
River King Mine Train / Rail Blazer
- On July 7, 1984, a 46-year-old woman from Indianapolis, Indiana was riding the Rail Blazer roller coaster when she was flung from the ride and fell 20 feet (6.1 m) to her death. Park officials claimed that the woman fainted and fell out of the car, but her husband, who had been beside her, said that she had not fainted but had simply been tossed from the ride when it whipped around a curve. At the time, the ride was only the third stand-up roller coaster in the world, but following this incident it was converted back to a sit-down coaster.
- On July 26, 1978, a man and two of his three nieces who were riding with him died when their gondola fell from the cable. The ride was shut down immediately, leaving nearly 100 people stranded in the 27 remaining cars, some of which had stopped at heights of up to 200 feet (61 m). Firefighters were called to the park to rescue the occupants of those cars. A park spokesman claimed that the car simply "dropped off" its cable.
- On June 24, 2018, there were two separate incidents on the attraction - one involving a 27-year-old man from St. Louis, and the other a woman from Lebanon, Missouri. In both cases, the guests fell out of rafts while riding, and were taken to the hospital due to undisclosed injuries. Park management closed the ride for inspection following the pair of incidents, per standard procedure.
- On June 3, 2018, a 23-year-old man from Caseyville, Illinois hit and pushed an employee dressed as Daffy Duck. The guest was arrested by police for assault.
Six Flags White Water
- On March 6, 2016, two individuals broke into the park, went past three fences, and skateboarded down the Tornado water slide as a half pipe. They were arrested on felony charges of criminal damage to property, causing an estimated $20,000 in damages to the fiberglass coat covering the slide.
- On July 11, 2010, a fire broke out in a maintenance building during operating hours, forcing the evacuation and closure of the park. The fire was contained to a single building, located adjacent to the park's wave pool and used principally for storage. Spokespeople for the water park and for the Cobb County fire department noted that everyone was evacuated safely and that there were no reported injuries. The park re-opened two days later on July 13 after crews had sealed off the damaged area caused by the fire.
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