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The Learjet 55 "Longhorn" is a business jet manufactured by Gates Learjet. The Learjet 50 series was first announced at the 1977 Paris air show with larger cabins than the existing Learjets. The series was to have three variants, the Learjet 54, 55 and 56 but only the Learjet 55 was built. The Learjet 55 was a low-wing cantilever monoplane with NASA developed winglets, the winglets gave rise to the nickname Longhorn. The aircraft has a T-tail and is powered by two Garrett TFE731 turbofans mounted each side of the rear fuselage. The Learjet 55B (1986) is an improved version with a glass cockpit, improved take-off performance and increased range. The Learjet 55C (1987) has new rear underfuselage design, delta fins to increase stability and reduced the landing speed. The Learjet 55C/ER is an extended-range version of the Learjet 55C. The Learjet 55C/LR is a long-range version of the Learjet 55C, fitted with an extra tank, carrying an extra 259 lb (117 kg) of fuel in the tail cone.


Max. length
5.05 m
Max. width
1.75 m
Max. height
1.70 m
Max. speed
880.00 km/h
545.00 MPH
Max. range
4 155 km
2 580 m
Max. service celling
15 545 m
51 000 ft