tour helicopter crash (on Oahu)

[Midnight Rambler]

That kind of helicopter is (literally) fatally flawed. Watch the video in the middle of this article. I strongly suspect that mast-bumping causing the rotor blades to break off is what caused the crash, because the witnesses described it as "spinning out of control" but photos of the wreckage showed the tail rotor and boom completely intact.

https://www.latimes.com/projects/la-me-r...licopters/