A Good Question!
In the event of a 'True Accident' where there was no criminal intent, and the pilot had excercised all 'Due Diligence' (I've seen way too many lawyer shows), personally I would not sue MAAC.
In my world; a legal action is initiated when someone has acted irresponsibly or in complete disregard for safety and then causes an accident or injury. At that time Legal action should be brought about against the individual.
MAAC would only be brought into the conversation if they knew that this person acted recklessly and did nothing about it.
Common sense should prevail, but if that happened regularly - we would have no need for lawyers.