The Cessna CitationJet series is a family of light business jets launched in 1989. The CitationJet Model 525 commenced its first flight in April 1991 and was first delivered in March 1993. The family of aircraft are powered by two Williams FJ44 turbofan engines, each producing between 1965 lbf – 3,621 lbf (8.7 kN – 16.1 kN) of takeoff thrust.