Hawker Beechcraft King Air C90

Based on the piston-engined Model 65 Queen Air, the 90 featured new Pratt & Whitney Canada PT6A turboprop powerplants in place of the earlier 65's Lycoming IGSO-480-A1E6 has flat six piston engines. A pressurized model was soon developed and was designated the King Air 90. Many variants followed including the PT6A-20-powered A90 and B90, and the C90 powered by 21 variant of the PT6A. The C90A, introduced in 1984, incorporated an improved cowling design for more efficient air induction and reduced drag, an updated three-bus electrical system, hydraulically actuated landing gear, exhaust stacks and Collins Pro Line avionics installed in a new instrument panel designed to reduce single-pilot workloads. A seven-seat version of the C90A was introduced in 1987, which featured an increase in maximum takeoff weight of 450 lbs.for a total MTOW of 10,100 lbs. In 1992, after a production run of 236 aircraft, the C90A was replaced by the C90B with its four-bladed propellers and significant improvements in cabin noise levels.

The King Air C90A is powered by a pair of Pratt & Whitney Canada PT6A-21 turboprop engines flat-rated at 550shp each at ISA +18C. Engine inspection interval is 3,600 hours.

The King Air C90A is a pressurized, twin-engine turboprop business aircraft configured as a cantilever low-wing monoplane with a conventional tail. It has hydraulically actuated retractable tricycle landing gear with a single wheel on each unit and an airstair door on the port side aft of the wing. It utilizes dual bleed air for cabin heat and pressurization. The three-bladed propellers are full-feathering and reversible. Leading edge pneumatic boots provide de-icing of the wing and tail surfaces.

The King Air C90A is found in a variety of configurations, typically 5 to 6 passenger executive seating with a four-place club, a seat directly across from the airstair door and a belted lavatory seat. The aft cabin/lavatory area has 26.5 cu. ft. of baggage space. The cabin dimensions are 4.8ft. in height, 4.5ft. in width and 12.9ft. in length.


Category : Multiengine Turboprop < 12,500 lbs.
Years Aircraft Manufactured : 1984 - 1992
Serial Number Range : 1063 - 1299

Seating : 1+7/9
Wing Loading : 34.4
Power Loading : 9.2
Noise(EPNdB) : Takeoff/Sideline/Approach 74.3

External Dimensions (ft)
External Length : 35.5
External Height : 14.3
External Span : 50.3

Internal Dimensions (ft)
Internal Length (Overall/Net Height) : 12.9
Internal Height : 4.8
Internal Width (Max/Floor) : 4.5/4.1

External : Cu.Ft./Lb. N/A
External : Cu.Ft./Lb. N/A

Engines : 2 P&WC PT6A-21
Output (lbs ea.)/Flat Rating : 550shp/ISA+18
Inspection Interval : 3,600t

Flight specifications

  • CREW: 2
  • RANGE: 1321
  • TOP SPEED: 269KNOTS(500KM/H)