.@RhusN
A worthwhile thread to read all through, after 50+ years in motorsport (scrutineer & entrant, builder) and a few working with Helicopters I would be worried about the number of loose fixings
Radiocom, I have been round motorsport in many roles for over 60 years now, car builder, driver, scrutineer and last role in NZ National Speed steward. My role now in UK is involved with top level motorsport seats (supplier to Prodrive, Porsche McLaren) and go to seat testing for FIA quite regularly. Just saying.
As I said in my previous, just trying to understand what happened so that as per the title "Lessons Learned", so far I am no further informed.
@ Granville, thanks for the correction, still a massive chunk of steel. It's a very long time since I have seen an M8 bolt break as per the photo (if ever) although I was able to break some with standard spanners when they came from China, marked as 8.8 but soft as butter.