Evolutionary improvements to the Citation Jet led to the development of the CJ1 in 1999. The CJ1 has a 200-pound higher maximum takeoff weight. Engine improvements give the CJ1 slightly increased range, better takeoff performance, and a few more knots cruise speed compared to the Citation Jet.
The highly successful Citation Jet was developed as a replacement for the Citation and Citation I. Cessna announced the Citation Jet at the annual NBAA convention in 1989. The Citation Jet is an updated version of the Citation 500. The fuselage is the same but it has a new T-tail and a new supercritical laminar flow wing. The Citation Jet is equipped with two Williams Rolls FJ44 engines with paddle thrust reversers. The first flight of the Citation Jet occurred on April 29, 1991, and certification occurred in 1992.
The CJ1 was in production until 2005, when it was superseded by the CJ1+.
