Our Definitive Gates Learjet 20 Series Simulators for Lockheed Martin® Prepar3D®
This release contains many new features and improvements over previous versions, including revised exterior/interior high resolution 3D models with more details and additional animations, new PBR materials and textures, 20 new liveries, new aircraft interiors, instrument panel dynamic light effects, dimmable cockpit and cabin lights, 40 visual effects, more than 120 sound effects including new cockpit and cabin sounds, a new sound system, new Learjet custom aircraft systems including a fully simulated anti-ice system (with ice effects on the windshield, windows, and exterior aircraft surfaces), two different cockpit configurations with support for optional third-party GNS/GTN systems and radars*, and a completely revised and updated 320-page flight manual.
*: Optional third-party GNS/GTN navigation systems and radars are not included and must be purchased separately. Prepar3D GPS and demo radar are included.
What's new in version 4?
Fighters in Civilian Clothing
Nicknamed “fighters in civilian clothing” because of their sleek design and amazing performance, the classic Lear Jet/Learjet 20 Series aircraft were the first true executive jets and redefined business aviation during the 1960s and 70s, flying high above the weather at transonic speeds. Their capabilities earned them a place among the extreme aircraft, setting record after record.
With the longer-range Gates Learjet Model 25D came a longer cabin, increased seating capacity, more flexible loading options, greater fuel capacity and a rather sleek-looking stretched fuselage. It is fast, slim, sexy, comfortable and capable of maneuvers you would never attempt with another civilian aircraft. According to some real-world pilots, its performance as a general aviation business jet is simply unequaled, even by today’s standards!
The Gates Learjet Model 28 along with its longer-range sister ship, the Model 29, represented the epitome of the straight-turbojet executive aircraft in the late 1970s and early 80s. With a fuselage based on the acclaimed Model 25, it had a new wing dubbed the “Longhorn” that replaced the traditional tip tanks with upswept winglets, the first ever on a jet, which provided a dramatic reduction of induced drag, therefore stretching range and enhancing climb performance. In February 1979, a Model 28 climbed from the ground to nearly 50,000 feet in about 12 minutes, setting five world records for altitude gain and sustained altitude in a business jet.
Unique Addons for your Hangar
The Xtreme Prototypes GLJ Model 25/28 v4 are next generation addons optimized for the latest versions of Prepar3D and designed to take advantage of the new and more powerful gaming computers and graphics cards that are available today. Nothing was spared in our efforts to reproduce the different instrument panels, carefully modeling and animating each mechanical device with all the necessary moving parts. Except for the LCD screens and the radio’s VFD displays, no flat 2D gauges are used in this model. Everything you see is in full 3D!
Each unique addon strives to bring you not only the actual feeling of flying a high-performance aircraft now equipped with modern avionics, but also the spirit of maneuvering such a vehicle at times where large LCD screens and powerful computers didn’t exist, and where pilots needed to know how to fly and navigate with minimal resources and rely on their own experience, abilities, and judgment.
At Xtreme Prototypes, we consider our addons as real micro aircraft simulators rather than just games. Our products take months if not years to develop and test by a dedicated and passionate team of artists, technicians and pilots. We pay attention to every detail and we do our best to make sure that we provide our users with the best flight simulation experience they can get within the limitations of the current simulation platforms. We believe our GLJ Model 25 and GLJ Model 28 addons are the most advanced, detailed, and faithful classic Learjet simulations you can find.
Designed by Users for Users
Becoming one of our users makes you an important member of our development team. Version 4 of our GLJ Model 25/28 addons is the product of the many ideas, comments, and suggestions we received from desktop pilots like you from around the world since version 1 of our 20 Series business jet addons was launched back in 2009. We wish to express our gratitude to all our users, followers, reviewers, test pilots, ex-Learjet employees, partners, and friends for their contribution to the making and success of this extreme aircraft simulator. Thank you for your continuous support!
Download the Manual
Download the full 320-page flight manual
(132 MB, PDF format)
Manuals are updated frequently, make sure you have the latest version.
What you Need to Know
- Optional third-party GNS, GTN, radar and special transponder addons are not included and must be purchased separately. Prepar3D GPS, demo radar and transponder are included.
- Both the XP GLJ Model 25 v4 addon and the XP GLJ Model 28 v4 addon are included in this special bundle. These are two different products that can also be purchased separately.
- You must accept the end-user license agreement before you can download, install and use this software.
- This version is not fully compatible with Prepar3D v6. A software update for Prepar3D v6 is currently in production. Please read "Minimum System Requirements", below.