Air Alliance Express (AAE) of Germany recently purchased its third Raisbeck ZR LITE Performance System for its GRO fleet of Learjet Model 35As. Air Alliance has been flying these Lear 35As for over eight years, and installed their first ZR LITE two years ago. After realizing the benefits firsthand, Air Alliance soon added two additional ZR LITE kits to their fleet. One AAE Lear (35A-421 in photo below) is also equipped with Raisbeck’s Aft Fuselage Locker.
Air Alliance has recorded overall fuel savings of 5-7%, along with better takeoff and climb performance (especially from hot and high airfields), and increased range.  They say the ZR LITE system is paying for itself in fuel savings alone—an excellent annual return on investment (ROI).
“The improved takeoff performance with ZR LITE enables us to depart our home base EDGS (Airport Siegerland, approximately 2,000 feet ASL) with a full fuel load,” reports Matthias Kupisch, Head of Operations for Air Alliance Express. “However, a big part of our decision to install ZR LITE on 35A-504 is the fact the system increased the value of the aircraft—it is even possible to sell an aging Lear 35 if it has been equipped with the Raisbeck systems!”

Raisbeck’s ZR LITE Performance System enhances the takeoff, climb, cruise and descent performance of Learjet Model 31, 35 and 36 aircraft.  In addition to being able to fly higher, faster and farther from more airports, ZR LITE saves at least 5% on fuel at normal cruise and up to 14% or more when pilots can take full advantage of the Learjet’s improved climb and cruise capabilities.
Raisbeck’s Aft Fuselage Locker for Model 31/35/36 Learjets returns cabin space to passengers, providing a spacious external compartment certified for up to 300 pounds of cargo. Especially valuable on multiple-stop trips since baggage can be loaded and unloaded without having passengers deplane, the locker also moves the center of gravity (CG) aft, resulting in less nose-up trim and reducing drag for additional fuel savings.
(Photo courtesy of Paulo Brito)