Learjet 40 / 40XR

The Learjet 40 entered into service in January 2004 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. The 40 model takes place of discontinued light Learjet 31A in the Learjet model line, with several welcome performance and comfort improvements that were taken from 45 models. 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 Learjet 40. The increases are due to the upgrading of the engines to the TFE731-20BR configuration.