Beech King Air A90

The Beech King Air A90 Model is a pressurized, twin-engine turboprop business aircraft configured as a cantilever low-wing aircraft with a conventional tail. It has retractable landing gear and constant speed, reversible propellors. The A90 King Air was produced by Beechcraft between 1966 and 1967, serial numbers LJ114 through LJ317.

The King Air 90 is found in a variety of passenger configurations seating up to 9 passengers and 1 pilot.

 

Specifications

 

Exterior Dimensions

Wing span: 45 ft 10 in
Length: 35 ft 6 in
Height: 14 ft 8 in

Interior Dimensions

Cabin Height: 4 ft 9 In
Cabin Width: 4 ft 6 In
Cabin Length: 12 ft 4 In
Cabin Volume: 227 cu ft
Internal Baggage: 48.3 cu ft

Weights

Max TO weight: 9,300 lb
Basic Operating Weight:  5,680 lbs
Maximum Payload: 1,800
Useable Fuel volume: 384 gal / 2,573 lbs

Engine

Manufacturer: Pratt & Whitney
Model: PT6A-20
Horsepower: 550 hp
Overhaul (HT): 3600hr TBO

Standard Avionics

Dual Avionics
Autopilot and Radar
ADS-B

 

Performance specifications on Beech A90

Horsepower: 550.00 Gross Weight: 9,300
Top Speed: 223 Empty Weight: 5,680
Cruise Speed: 216 Fuel Capacity: 384
Stall Speed (dirty): 77 Range: 1,160
 
Rate of Climb: 1,900 Rate of Climb (One Engine): 490
Service Ceiling: 30,200 Ceiling (One Engine): 17,700
 
Takeoff Landing
Ground Roll: 1,730 Ground Roll 1,250
Takeoff Roll Over 50 ft: 2,150 Landing Roll Over 50 ft: 1,960

 

 

History

After two years of production the 65-90, Beechcraft moved on to the 65-A90 in 1966. The A90’s TOGW was increased from 9,000 to 9,300 lbs and it was given an engine upgrade from the PT6A-6 engines found on the original 65-90 to more powerful PT6A-20 engines. Its flight deck was also redesigned, and it came equipped with a new engine de-icing system. The 65-A90 was the most widely produced of the variations as 206 of them were built.

Variations

King Air 65-A90

Model 90 with TOGW increased to 9300lb, two 550shp PT6A-20 engines, redesigned flightdeck and a new engine de-ice system, 206 built.

King Air 65-A90-1

Based on the Model 87, unpressurised with square windows and 550shp PT6A-20 engine, 141 built and delivered to the US Army with the designation U-21A.

King Air 65-A90-2

Specialized electronic warfare variant of the A90-1 with five seats, three built as U-21Bs (later RU-21B).

King Air 65-A90-3

Variant of the A90-2 with improved electronic equipment, two-built for the US Army with the designation RU-21C.

King Air 65-A90-4

Project Guardrail variant of the A90-2, strengthened airframes and higher gross weight, 16 built for the US Army.

 

 

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