The On-Board Inert Gas Generating System (OBIGGS) is an important part of an aircraft’s on board fuel supply safety system. Due to complex geometries presented by fitting the system in the aircraft’s wings, it is possible for the distribution system to dip into a fuel tank, allowing fuel to entrain in the pipes. This clinic project tests the effectiveness of the OBIGGS System in clearing entrained fuel by simulating geometries and conditions found in an aircraft.