Recent content by Alistair_Heaton

https://www.bbc.com/news/articles/cvgq7345yrjo Being reported, bit confusing if there was another car involved which became detached. And it looks very similar to this thread from 2021 https://www.eng-tips.com/threads/cable-car-disaster-in-italy.483442/

It may be. There are a few things with enough energy and solid connection to other bits.

That's exactly my thoughts The disk has enough energy to land it with an engine failure and autorotate. I suspect they already know the primary cause. They are in the guts of the why the primary cause existed. I very much doubt it will be an original design issue.

My thoughts are what has enough energy either kinetic or potential in a rotor drive train that when stopped or released can throw that big a mass away while snapping it's mounts?

On the turboprop engines they had a spline shear tube to disconnect the gearbox from the turbine section. It did occasionally fail for no reason. Don't have a clue how rotary do it. That just sounds a nasty company. I have had numerous arguments over the years about sightseeing setups...

https://www.nytimes.com/2025/04/12/nyregion/nyc-helicopter-family-crash.html Just nasty and all too common.

https://simpleflying.com/difficult-tackle-atc-crisis-us/ And I thought we had issues this side of the pond. It needs separated from the FAA and funded in some other manner.

I thought that was a British made car or motorbike.

https://www.cnn.com/2025/04/08/politics/reagan-national-airport-near-collision-investigation-military-flyover/index.html Another mil v civi incident.

They require very little encouragement to self destruct. They can do it with no failures, just a butterfly fart in the other hemisphere can trigger them to suicide.

Honestly if you don't need to go in a helicopter. Don't go in one out of choice. They are great when you need them but the additional risk is way above most other forms of transport. The pilot it seems was ex military and was reported by his peers as more than competent. Not that really...

This over loading on flat roofs is common in the first world never mind 2nd or third. Go to Dubai and see what gets stuck up there.

The blades I think are alloy Macaulay props. They are pretty sturdy like the Jetstream. The prop itself might be ok after NDT. The gear box, shear spline and a few other things behind it likely not ok.

Ops wrong plane type it's a let 410 which unpressurized and even slower than an ATR

https://nypost.com/video/backpack-flies-into-plane-propeller-and-shreds-instantly/ That would have been a bit of thump and yaw. To note I can only presume it came from the forward hold. The door being open or opening on that would be more of a concern to me than a soft bag doing what it did.