Cessna Citation V The Cessna Citation V ( Model 560 ) is a turbofan - powered small - to - medium sized business jet built by the Cessna Aircraft Company in Wichita , Kansas . A stretch of the Cessna Citation II series , the Citation V aircraft was evolved into the Citation Ultra , the Citation Encore , and the Citation Encore + models . Design and development . Citation V . After stretching the Citation I to make the II , Cessna decided to increase the size of the cabin again , stretching the fuselage by another , resulting in the largest member of the straight - wing family , the Model 560 Citation V . The first engineering prototype flew in August 1987 , and certification was granted in December , 1988 . The aircraft utilized the T - 47A ' s JT15D5A engines for extra performance . By the time the aircraft was superseded in 1994 , 262 had been built . Citation Ultra . In 1993 , Cessna decided to update the Citation V design , and announced the Citation Ultra Powered by Pratt & Whittney JT15D - 5D engines with 3045 lbs of thrust and the standard avionics suite , which was updated to the Honeywell Primus 1000 EFIS glass cockpit . The Primus 1000 replaced the standard " round dial " flight instruments with three CRT computer screens , one for each pilot and one center mulifunction display . In 1994 , the Ultra was named " Flying " magazine ' s " Best Business Jet " . The Ultra was produced from 1994 – 1999 . Both the Citation V and Ultra hold 5816 pounds of fuel . The UC - 35A is the United States Army designation and UC - 35C is the United States Marine Corps designation for the Citation Ultra , which replaced older versions of the C - 12 Huron . Another version of the Model 560 is the OT - 47B " Tracker " , five of which were purchased by the Department of Defense for use in drug interdiction reconnaissance operations , based at Maxwell Air Force Base . The OT - 47B utilizes the F - 16 ' s APG - 66 ( V ) fire control radar system and the WF - 360TL imaging system . The OT - 47Bs have been operated on loan to the Colombian Air Force and Peruvian Navy . Citation Encore / Encore + . Five years later , in 1998 , the Model 560 was upgraded again as the Citation Encore , with Pratt & Whitney Canada PW535A engines and a decrease in fuel capacity to 5 , 440 pounds , 360 pounds less than the Ultra ' s , but it has more range than the Ultra - 1 , 700 nmi with NBAA IFR reserves . The reduction in fuel tank size allowed Cessna to fit the Encore with soft - landing , trailing link , main landing gear , a welcome change for pilots who griped about the notorious kerplunk touchdown characteristics of the stiff - legged earlier Citations aircraft . In addition , the wheel track has been narrowed 3 . 7 feet for better ground tracking and more mannerly crosswind landing behavior . The Encore ' s standard equipment list have been increased and many systems have been upgraded . Bleed air is used to anti - ice the wing leading edge , and several boundary layer energizers , plus a stall fence , have been added to the wing to improve stall characteristics . A digital pressurization controller reduces pilot workload and an improved wheel brake system offers better modulation . Redesigned interior fittings and passenger seats provide more seated headroom . New passenger service units provide more even airflow and temperature control . The Encore ' s MTOW is bumped 330 pounds to 16 , 630 pounds , enabling it to carry five passengers with full fuel . The additional weight increases takeoff field length to 3 , 561 feet , compared with 3 , 180 feet for the Ultra . The much improved high altitude thrust output of the PW535 engines , however , allow the Encore to climb faster and cruise higher . Its maximum cruise altitude is FL 450 . The Encore was certified in April 2000 with first delivery in late September 2000 . The next upgrade was the Citation Encore + , with the addition of FADEC - controlled PW535B engines and Rockwell - Collins Pro Line 21 avionics suite . The Encore + was certified by the FAA in December 2006 , with deliveries of production aircraft expected in the first quarter of 2007 . The UC - 35B is the Army designation and UC - 35D is the Marine Corps designation for the Citation Encore . Operators . Civilian operators . The aircraft is operated by private individuals , companies , fractionals , charter operators and aircraft management companies .