Just a word on insurance particularly hull insurance.
Most aircraft are owned by leasing companies and operated by the airline. The leasing contracts of course require that the aircraft is operated in accordance with all applicable rules and regulations.
However !!
If the airline with a $50m aircraft operated with some slight breach such outside the MEL or too many pass or whatever and then crashed do you think the leasing company would say "oh dear no insurance we will have to sue the airline who has just gone broke ?"
The leasing companies basically insist on a hold harmless clause which they will get paid out regardless and they are named as "loss payees" so they money goes direct to them is does not pass go or even the operator.
Now of course the insurance company can sue the airline for the money back !!! and good luck