The usual questions flashed by: Had Lubitz been completely vetted to fly? Was his being alone in the cockpit illegal in terms of German or international laws? Was the pilot negligent in leaving the co-pilot alone in the cockpit?
Reuters reporters David Ingram and Victoria Bryan did the footwork on this, which is reprinted in Business Insider.
If there is no lawsuit filed, the airline is liable for about $157,400 for each passenger.
If lawsuits are filed those could be done in Germany or the passengers' home countries. As the reporters note, "Passengers' families are limited to claiming provable damages, which vary depending on jurisdiction but may include loss of support and paint and suffering, the lawyers said."
Should there be lawsuits, typically they are settled.