I'm working on a report on a light aircraft accident at the moment - four separate errors I can identify that led up to the accident, all ultimately by human beings (or organisations run by human beings), and the good old Swiss Cheese model covers it very well since I can show how any of them, handled differently, could have prevented the accident (well, three out of the four anyhow).
The only thing that doesn't quite accord in this particular case with the standard Swiss Cheese diagram is that it didn't finish with an obvious operator error - simply that too many opportunities had been missed to trap a structural fault.
MG:
pilot prayed in stead of doing emergency drills
Thank you, that just made my (agnostic!) day.
G