A Delaware judge has tossed claims for negligence and fraud against the maker of an airplane that crashed at an airport in the Democratic Republic of Congo in 2012, killing five people on board.

Superior Court Judge Mary M. Johnson on Wednesday dismissed the lawsuit from The Lima Delta Co., a Delaware-based firm that purchased the aircraft in May 2011, saying that the tort claims were barred under Delaware law. In its complaint, Lima Delta attributed the crash to faulty brakes and alleged that Gulfstream Aerospace Corp., the Savannah, Georgia-based aircraft-manufacturer, knew about the defect but failed to report it to federal aviation regulators.