Logically I'd agree Mitchaa. Except no one is about to point fingers at potential mistake makers because of the fallout. If it looks like a maintenance error, you need to pull work sheets, components used, trace back down the supply chain from stores back to the OEM etc. That's what's going to take time.
Our company works with the Norwegians and have never found them lacking in any respect. I have the highest regard of them and their people, which is not an excuse or disclaimer for what happened Friday, just a fact.