page_title: Learjet 45
section_title: Model 45XR
hierarchical_section_title: Learjet 45 / Variants / Model 45XR
caption_attribution_description: Bombardier Learjet 45XR - 33, closeup portside with door open at the 2007 Paris Air Show.
context_page_description: The Learjet 45 aircraft is a mid-size business jet aircraft produced by the Learjet Division of Bombardier Aerospace.
  The Model 45 was the first all-new design since the original Learjet, and significantly altered the Learjet line. Through its four primary variants – the original Model 45, the Model 45XR, Model 40 and Model 40XR – it was the Learjet Division's principal product from the 1990s until the introduction of the Model 75 variant in 2012.
context_section_description: The Learjet 45XR is an upgraded version of the Model 45, introduced in June 2004, offering substantially higher takeoff weights, faster cruise speeds and faster time-to-climb rates than the Model 45, chiefly through modifications to the engine.
  The XR allowed a gross weight 1,000 pounds greater than the original Model 45, greatly increasing payload and fuel/range options. The aircraft also has exceptionally short runway requirements for mid-size bizjets, capable of loaded flights from 4,000-foot runways.
  The 45XR's performance and specifications increases are due to the upgrading of the engines to the TFE731-20BR configuration, flat-rated to 3,500 pounds thrust, even at 104 degrees Fahrenheit, well above the 88-degree mark for that power from the original Model 45's TFE731-20 engines.
  The Model 45 cockpit is equipped with a four-screen Honeywell Primus 1000 EFIS avionics system, with TCAS and EGPWS.
  LJ45 owners can upgrade their aircraft through the incorporation of several service bulletins .
caption: Learjet 45XR at the 2007 Paris Air Show
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