Aircraft types
Citation 550/551
Cessna developed stretched Citation variants in the mid-1970s: the 10-passenger Citation II (1977), improved S/II (1984), and Bravo with more powerful engines (1995-2006).
Citation 560
The Citation 560, Ultra and Encore are stretched Citation 550s with various engine upgrades. The 560 flew in 1987, Ultra added more powerful engines in 1994, and Encore introduced PW535A engines in 2000.
Embraer Legacy 600/650
The Legacy 600 is derived from Embraer's EMB-135BJ, first flew in 2001, and was certified in 2002. The upgraded Legacy 650 launched in 2008 with longer range through increased fuel capacity and more powerful engines. Production ended in 2020.
Falcon 2000 EASy
The Falcon 2000EX, an upgraded variant with PW308C engines, first flew in 2001 and was certified in 2003. Multiple variants followed including the 2000DX, 2000LX with winglets, 2000LXS with improved avionics, and 2000S.