Northern Air (Booth No. 4301), an FBO at Gerald R. Ford International Airport in Grand Rapids, Mich., has completed a major remodeling of its customer-service areas. According to the company, the four-month project “transformed an out-of-date and inefficient space into a modern, warm and conducive environment.” Northern Air, which has been in business since 1946, has 75,000 sq ft of heated hangar space at the Grand Rapids airport. The FBO is a factory-authorized service center for Cessna, Piper, Diamond, Mooney, Textron Lycoming and Teledyne Continental.