Learjet 35

R-21A


Not a U.S. military designation. Reconnaissance version of the Learjet 36A, equipped with a long-range oblique photography cameras, SLAR and a surveillance camera system.


U-21A


Not a U.S. military designation. Utility transport, training version of the Learjet 36A.
Four were built for the Japan Maritime Self-Defense Force.

After-Market Modifications

Raisbeck Engineering offers two after-market modifications to the Learjet 35 and 36 series of aircraft.

The Aft Fuselage Locker offered by this company is an external storage container mounted below the rear fuselage that can hold 300 lb of baggage.

The addition of the locker imposes no performance penalties on the aircraft.

This company also offers the ZR LITE performance improvement package.

This modification reduces the cruise drag of the aircraft resulting in 25% less time-to-climb, 3000 to 4000 feet higher initial cruise altitude, .02+ increase in cruise Mach at equal power settings, 1% decrease in N1 and 15° ITT reduction at equal Mach and a 5-10% increase in range.

Avcon Industries also offers two after-market modifications to the Learjet 35 and 36 series of aircraft.

The Avcon Fins are delta fins mounted n the aft fuselage, similar to those used on the Learjet 31 which improve directional stability when installed on Lear 35 & 36 models, and eliminate the FAA requirement for operable yaw dampers.

The Avcon R/X modifications adds 750 pounds of usable fuel in the tip tanks, which provides up to 40 minutes of additional flight time at normal cruise speeds and altitudes.

Civilian operators


German Air Rescue (DRF Stiftung Luftrettung gAg), AirMedical Ltd, Oxford, England
Raytheon Australia EWTS

Pelair (Australia) Defence and government related aviation support, Medivac, Executive Charter, Freight, Special Mission activities for international aid organisations

Air Affairs (Australia) Corporate Charter, Medivac, Target Towing

Líder Aviação (Brazil) Corporate Charter and Medivac -Líder Aviação

Rent Jets (Republic of Moldavia) Executive Charter -Rent Jets

Airnet Systems, Inc. (U.S.A) Cargo and Executive Charters