Cessna Aircraft Company is one of the leading designers and manufacturers of light- and medium-sized business jets, utility turboprops and single-engine aircraft in the world. The company has a staff of more than 15,000 employees. It has been in business since 1927. Cessna Aircraft Company has delivered over 1,300 aircraft. The company operates one of the largest fleet of business jets in the world. Its pre-owned inventory of aircraft includes the Citation CJ1, Citation Bravo, Citation Ultra, Citation Encore, Citation Excel, Citation Sovereign and Citation X models. The company operates nearly 10 service centers across the United States and Europe. Its New York Citation Service Center offers troubleshooting, repair, maintenance and inspection services. In addition, Cessna Aircraft Company is a part of Textron, which serves the needs of clients in the aircraft, defense, industrial and finance industries.