Jet Aviation St. Louis received its first Boeing Business Jet (BBJ) last month, and a second is scheduled to arrive later this spring. Both aircraft will undergo maintenance and minor interior upgrades. Construction of a hangar sized for single-aisle bizliners, training of technicians and investment in infrastructure paved the way for the BBJ projects. The MRO sent technicians to its sister facility in Basel, Switzerland, to gain first-hand experience working on BBJs. The cooperative work program began in early 2010.