Fins/Range Extension

View Fins/Range Extension PDF

NO Yaw Dampers Required

Avcon Fins dramatically improve directional stability when installed on Lear 25, 35 & 36 models. Avcon Fins eliminate the FAA requirement for operational yaw dampers. This results in increased dispatch reliability. Moreover, Avcon Fins work, and work extremely well!

Improved Handling & Performance

The first thing that flight crews notice when flying an Avcon Fin equipped Learjet, is the smoothness and positive control response, even at low airspeeds. The aircraft simply performs better. Like the feathers of an arrow, Avcon Fins interact with the vertical stabilizer to create positive stability in all three axes. The fins also channel and smooth the airflow around the tailcone area with obvious drag reduction benefits.
At cruise airspeeds, Avcon Fins are aligned to provide aerodynamic input when the aircraft attempts to stray from the intended line of flight, such as during turbulence. This “self-correcting” feature controls yaw and helps keep the aircraft on the step for optimal range performance.
During landing and other low-speed maneuvers, Avcon Fins also eliminate divergent dutch roll tendencies by providing additional lift and directional stability, resulting in very solid and predictable handling characteristics.
The net result is an aircraft that flies better and looks great.
Optional Increased Payload
As an added benefit, installation of Avcon Fins allows Learjet 35/36 owners to purchase one or more of the optional weight increases described below:
Avcon Fin Weight Increase Chart*
Ramp Weight: 19,850
Take-off Weight: 19,600
Landing Weight: 16,000
Zero Wing & Tip Fuel Weight: 14,500
*Requires installation of heavy landing gear (AAK 80-3 or equivalent) on earlier L-35/36 model aircraft.
The weight increases are FAA STC approved, and increase the useful load of Avcon Fin equipped Learjets by over 1,200 pounds. That offers over half a ton of additional revenue potential on every trip, exclusively from Avcon.