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Learjet 40
Learjet 40
General information
Type	Business jet
Manufacturer	Bombardier Aerospace
Number built	133
History
Manufactured	2002–2013
Introduction date	January 2004
First flight	August 31, 2002
Developed from	Learjet 45
Developed into	Learjet 70/75

The Learjet 40 (LJ40) is a light business jet produced by Bombardier Aerospace.

Design and development

The Learjet 40 is derived from the Learjet 45, but with a shorter fuselage (by 24.5 inches/60 cm), and is powered by two Honeywell TFE731-20AR engines. These are known as the "AR" engines. The 40 model takes the place of the discontinued Learjet 31a in the Learjet model line, with several performance and comfort improvements taken from the 45 model.

The prototype aircraft, a rebuilt Model 45, first flew on August 31, 2002, and the first production aircraft performed its maiden flight on September 5, 2002. Both flights took place from the Wichita Mid-Continent Airport. The LJ40 entered into service in January, 2004.^[2]

The Learjet 40XR is an upgraded version introduced in October, 2004, offering higher takeoff weights, faster cruise speeds and faster time-to-climb rates as compared to the LJ40. The increases are due to the upgrading of the engines to the TFE731-20BR configuration. These are the "BR" engines. LJ40 owners can upgrade their aircraft through the incorporation of several service bulletins.^[3]

Specifications (Learjet 40)

Data from Jane's All the World's Aircraft 2004–2005^[4]

General characteristics

Crew: 2
Capacity: 7 passengers
Length: 55 ft 6 in (16.92 m)
Wingspan: 47 ft 9+1⁄4 in (14.561 m)
Height: 14 ft 4+1⁄2 in (4.382 m)
Wing area: 311.6 sq ft (28.95 m²)
Aspect ratio: 7.3:1
Empty weight: 12,740 lb (5,779 kg)
Max takeoff weight: 20,350 lb (9,231 kg)
Fuel capacity: 905 US gal (754 imp gal; 3,430 L)
Powerplant: 2 × Honeywell TFE731-20AR turbofan engines, 3,500 lbf (16 kN) thrust each