It is basic Civil Procedure, Evidence and Trial Advocacy to sue as many parties/entities as possible. Arguing about whether that is right or wrong is like what Purple F/O said in Cargo - like winning the Special Olympics. Lawsuits will be filed for as long as the legal system is the way it is today. It may be difficult to believe, but our system, for the most part, works and works well.

The article noted that a first lawsuit, wherein Comair claimed the FAA failed in its duty to inspect and approve construction, was dismissed. The new suit is a breach of duty to control taxiing. It is curious that these two claims were not combined in the first place as judicial economy would indicate.