Learjet 40

Overview

The Learjet 40 entered service in 2004 as a successor to the Learjet 31A and a shorter, lighter alternative to the Learjet 45. Derived directly from the Model 45, it shares the same cross-section and systems but features a fuselage shortened by approximately two feet (removing two seats) and reduced fuel capacity. The standard Lear 40 is powered by Honeywell TFE731-20AR engines rated 3,500 lbf each, with single-channel DEEC and Honeywell MSP coverage as the industry-standard maintenance program.

Designed to outperform the Citation Bravo and Encore in speed and cabin volume, the Lear 40 retains the family’s classic high-altitude profile. Mach 0.81 cruise and a 51,000-foot service ceiling let it climb above most commercial traffic and weather, while the FAR Part 25 transport-category certification basis brings redundant systems not always present at this weight class.

Key Features for GA Buyers

• Class-leading altitude. Service ceiling of 51,000 ft and Mach 0.81 cruise let the Lear 40 fly above most commercial traffic and weather.
• Cabin comfort. The flat-floor cabin with no spar intrusion offers a cross-section larger than many light-jet competitors, putting mid-size comfort in the light-jet bracket.
• Part 25 safety. Built to FAR Part 25 transport-category standards, including redundant systems not always found at this weight class.

Trade-offs

• Range vs. payload. While capable of approximately 1,700 nm, filling the seats significantly reduces range. The Lear 40 carries about 100 gallons less fuel than the Lear 45.
• Climb performance. Initial climb rate of approximately 2,800 fpm is modest compared to the legacy Learjet 35 and 20-series figures, primarily due to the heavier, robust airframe.

See Also

• Bombardier Learjet 45 – Direct platform predecessor; the Lear 40 is a fuselage-shortened Lear 45. Compare
• Bombardier Learjet 31 – Prior-generation light Learjet on the typical step-up path. Compare
• Cessna Citation CJ4 – Closest direct competitor in the upper-light-jet bracket on speed, range, and payload. Compare
• Cessna Citation V / Ultra / Encore – Mid-light Citation cross-shopped on cabin and operating cost. Compare
• Hawker 800XP – Older mid-size cousin frequently cross-shopped at the upper end of the light-jet budget. Compare