Universal Islands Of Adventure ride reliability

1. 1Popeye & Bluto's Bilge-Rat Barges®8d 14h lost · 88 breakdowns · down on 60 of 60 days 68.5%
2. 2Skull Island: Reign of Kong7d 21h lost · 53 breakdowns · down on 57 of 60 days 71.4%
3. 3Hogwarts Express™ - Hogsmeade™ Station6d 19h lost · 56 breakdowns · down on 59 of 60 days 75%
4. 4Pteranodon Flyers4d 3h lost · 73 breakdowns · down on 55 of 60 days 84.6%
5. 5Dudley Do-Right's Ripsaw Falls®3d 20h lost · 53 breakdowns · down on 53 of 60 days 85.9%
6. 6Hagrid's Magical Creatures Motorbike Adventure™3d 20h lost · 64 breakdowns · down on 48 of 60 days 85.9%
7. 7Jurassic World VelociCoaster3d 19h lost · 93 breakdowns · down on 57 of 60 days 86.1%
8. 8Flight of the Hippogriff™2d 16h lost · 56 breakdowns · down on 42 of 60 days 90.1%
9. 9Storm Force Accelatron®2d 8h lost · 64 breakdowns · down on 55 of 60 days 91.3%
10. 10The Incredible Hulk Coaster®1d 18h lost · 33 breakdowns · down on 36 of 60 days 93.5%
11. 11The High in the Sky Seuss Trolley Train Ride!™1d 18h lost · 50 breakdowns · down on 38 of 60 days 93.6%
12. 12Doctor Doom's Fearfall®1d 9h lost · 23 breakdowns · down on 26 of 60 days 94.9%
13. 13One Fish, Two Fish, Red Fish, Blue Fish™1d 8h lost · 27 breakdowns · down on 35 of 60 days 95%
14. 14The Cat in The Hat™1d 5h lost · 33 breakdowns · down on 43 of 60 days 95.2%
15. 15Caro-Seuss-el™1d 2h lost · 16 breakdowns · down on 30 of 60 days 95.9%
16. 16The Amazing Adventures of Spider-Man®23h 6m lost · 33 breakdowns · down on 44 of 60 days 96.3%
17. 17Harry Potter and the Forbidden Journey™23h 52m lost · 30 breakdowns · down on 35 of 60 days 96.5%
18. 18Ollivanders™ Experience in Hogsmeade™11h 56m lost · 51 breakdowns · down on 53 of 60 days 98.1%

Breakdowns cluster at 5pm, with 127 of the 893 closures that started before the park's final hour beginning then - so the ride you most want is safest earlier in the day, not saved for last. A further 257 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. The other 3 closures start in the 9pm hour, when the park is shutting - those are rides finishing their day, not failing, so they are left out here.

The worst day in this window was 7 Sept, when 29.9% of the park's ride hours were lost and 17 of 19 rides went down at some point.