Cessna Aircraft announced the “Sovereign Shield” program yesterday for 2013 Citation Sovereigns, covering all scheduled maintenance and parts costs for these business jets for the first five years or 1,500 flight hours. The program “practically eliminates” maintenance-related direct operating costs for these Citation Sovereigns, Cessna said. According to Cessna, operators covered by the Sovereign Shield program can save more than $3,500 on a 2,000-nm trip compared with operators of competing midsize jets.