Trouble of rotational play machine

Oct 25, large rotational play machine had trouble in Hokkaido. The machine stopped emergently. Then,two women riding on it were left with the machine at the height of about 30 meters from the ground. Although they were rescured without geting any injury, they were in the sky 30 long minutes. What a terrible time for them! I cannnot imagin their fear during the time. I think they will never ride rotational play machine from now on. Their mental should be cared in order not to suffer the fear. The cause is not clear yet. All of the amusement park have to check machines any time because accidents like this have the potential to cause the death of guests. If the accident with death happens, it would lead to lose confidence of the amusement park.