A $1.6-Million settlement has been reached in the lawsuit filed against Cessna Aircraft by the families of Governor Mel Carnahan and his son, Randy, and campaign aide Chris Sifford. They were killed in the crash of their Cessna airplane in October of 2000. Still pending are suits against makers of the vacuum system and a flight instrument on the plane. The National Transportation Safety Board says the crash involved pilot disorientation, and a faulty instrument that showed whether the plane waspointed up, down, or flying level.