Disney officials shut down the "Mission: Space" ride at Epcot Center in Orlando late Wednesday after a 49-year-old woman died, one day after riding the space-themed ride.
She is the second person to die within the past year after riding the $100 million space ride.
The woman, whose identity wasn't released, rode "Mission: Space" Tuesday afternoon, became ill afterward and was taken to Celebration Hospital.
Her condition worsened, and she died Wednesday.
"First and foremost, our concern is for the guest's family. We offer them our deepest sympathies and assistance during this difficult time," Walt Disney World representative Kim Prunty said in an e-mailed statement.
The state Bureau of Fair Rides Inspection was notified and will be on site to monitor the inspection and review of the attraction, Prunty said.
Daudi Bamuwamye, 4, of Pennsylvania died in June after riding the space ride.
Dr. Jan Garavaglia, the chief medical examiner of Orange County, said Bamuwamye suffered from cardiac arrhythmia due to heart disease.
Since Daudi had an abnormality of the heart muscle, it put him at risk during any stressful activity throughout his life.
Signs at the ride warn: "For safety, you should be in good health and free from high blood pressure, heart, back or neck problems, motion sickness, or other conditions that could be aggravated by this adventure."
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