The Citation was introduced in 1972 as a low-cost, pressurized, fan-powered business aircraft. It was designed to operate from smaller fields previously accerssable only to light turboprop or piston-powered aircraft. The improved Citation II was introduced in 1977. It incorporated a fuselage stretch of 3.75ft, increased fuel and baggage capacity, and Pratt & Whitney of Canada JT15D-4 turbofan engines. The Citation II was replaced in 1984 by the Citation S/II, powered by the new JT15D-4B engine variant which offered greater thrust at higher altitudes. The S/II also featured a new supercritical wing for reduced high-speed drag and was equipped with a fluid de-icing system in place of the pneumatic boots found on earlier Citations. The Citation S/II accomplished its first flight in February 1984 and received FAA certification in July 1984. It continued in production through 1988 when it was discontinued after a run of 159 units in favor of the newly re-introduced Citation II.
The Citation S/II is powered by a pair of Pratt & Whitney of Canada JT15D-4B turbofan engines rated at 2,500lbs. of thrust each at takeoff power. Inspection interval on the engines is 3,500 hours.
Standard equipment for the Citation S/II included dual Collins 20A radios and VIR 30 navigation systems, Sperry flight director/autopilot with vertical navigation and altitude preselect, and a Bendix RDR 1100 weather radar. A Sperry EFIS was available as an option.
The Citation S/II is a medium-range twin-turbofan powered business aircraft configured as a low, straight-wing monoplane with a conventional empennage which utilizes a slightly swept vertical stabilizer. The airframe is of aluminum monocoque construction. The retractable tricycle landing gear has a single wheel on each unit. Improvements over earlier Citations include a high aspect-ratio wing with a supercritical airfoil section and a fluid de-icing system. Aerodynamic refinements combined with the improved JT15D-4B turbofans give the S/II slightly greater speed and range than earlier Citations models.
The Cessna Citation S/II was offered with standard six and nine-passenger configurations. Maximum cabin height is 4.8ft., cabin width is 4.9ft., floor width is 3.2ft. and overall cabin length is 16ft. The Citation S/II is marginally quieter than earlier Citations, due in part to the relocation of the engines further aft on the fuselage.
|General||Citation S/II, CE-S550|
|Category||Jet < 20,000 lbs.|
|Years Aircraft Manufactured||1984 – 1988|
|Serial Number Range||0001 – 0160|
|Retail High Price||$2,595,000.00 / 2,036,296.50€|
|Retail Low Price||$595,000.00 / 466,896.50€|
|Characteristics||Citation S/II, CE-S550|
|Seating||2 + 7/9|
|Noise(EPNdB): Takeoff/Sideline/Approach||88.7 / 86.2|
|External Dimensions (ft)||Citation S/II, CE-S550|
|Internal Dimensions (ft)||Citation S/II, CE-S550|
|Internal Length (Overall/Net Height)||16.0|
|Internal Width (Max/Floor)||4.9/3.2|
|Baggage||Citation S/II, CE-S550|
|Power||Citation S/II, CE-S550|
|Engines||2 P&WC JT15D-4B|
|Output (lbs ea.)/Flat Rating||2,500|
|Data based on latest manufactured year|