The Cessna C501 crashed shortly after taking off from the Smyrna airport, 12 miles south of Nashville, according to Rutherford County Public Information Officer Ashley McDonald.There were seven people on board, Federal Aviation Administration spokesperson Arlene Salac said. Officials do not know who was on board the aircraft, McDonald said at a news briefing Saturday afternoon. They are not disclosing who the jet was registered to, she said. Names will not be released until the next of kin are notified,