Much of what Arlington police learned about the deadly roller coaster accident at Six Flags over Texas, shows the car the rider was in had been a problem.
The 92-page Arlington police report, including video, audio recordings and photographs, shows the day was traumatic for everyone.
On July 19, the cars on Six Flag's Texas Giant are seconds from the station, when the ride's automatic photo system snaps a picture.
It conveys the shock and horror of riders who witnessed Rosa Esparza, 52, fall to her death.
Esparza's daughter and son-in-law were seated in the second row - one ahead of Esparza.
Dillion Chambers, 19, from Oklahoma told investigators he was sitting right behind Esparza and saw everything.
"She bounced up and then we hit like a turn or something, and she flew head first into her seat. Her feet were straight up in the air," Chambers told police. "Then we hit another turn - and that's when she fell out."
Esparza fell 75 feet and landed on top of one of the tunnels that's part of the ride. Riders passed through the tunnel after she fell.
In the report, police describe what investigators were told by a Six Flags employee in charge of operating the Texas Giant.
"When the train went by [the employee] remembers thinking the restraint wasn't all the way down on [Esparza's] thigh, but it was far down enough for the computer to register it as locked."
The employee said he or she "Figured it would be okay due to her being a larger lady as well as it being down that far (i.e. to register with the computer)."
One week before Esparza's death, another rider had her cell phone video rolling as she settles in for a ride on the Texas Giant.
On the video, the rider suddenly becomes alarmed because her restraint bar has popped open.
Police say that rider was also in car number three.
Arlington police determined there was no criminal negligence by Six Flags.
The amusement park says it's own investigation found the accident was not caused by mechanical failure.
An attorney for Esparza's family says that doesn't match what's in the police report.
"It's a combination of evidence that shows this bar wasn't properly seated in the first place and came open," Frank Branson said, "and cost Mrs. Esparza her life."
KDFW FOX 4
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