The Learjet 35 and 36 are larger, turbofan powered developments of the initial Learjet models, the 23, 24 and 25.
The Learjet Model 31 is the ultimate realization of the original Learjet series. Essentially combining the fuselage and engines of the model 35/36 with the Longhorn wing of the 28, 29 and 50 models. Delta-Fins and a Ski-Locker increase the utility and improve the performance of the model 31. Increased directional stability, as a result of the Delta-Fins, is also a welcome benefit.
Jomo Kenyata International Airport, Nairobi Kenya