Nextant 604XT

The remanufactured large-cabin jet built from Challenger airframes.

Overview

Nextant Aerospace United States ICAO: 604XT 2017–Present $8 million (2019)

The Nextant 604XT is a remanufactured version of the Bombardier Challenger 604. Announced in the 2010s, it aimed to modernize existing airframes with updated systems. The program focused on avionics and interior upgrades.

Live Fleet Activity (604XT)

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Specifications

Units
Engine
2 × General Electric CF34-3B
Engine type
Turbofan
Thrust
2 × 9,220 lbf · 41 kN
Avionics
Rockwell Collins Pro Line Fusion
Wing tips
Canted winglets
Seats
11
Crew
Cabin width
8 ft 2 in  ·  2.49 m
Cabin height
5 ft 11 in  ·  1.80 m
Cabin length
28 ft 3 in  ·  8.60 m
Exterior length
68 ft 3 in  ·  20.80 m
Tail height
20 ft 7 in  ·  6.27 m
Fuselage diameter
8 ft 6 in  ·  2.60 m
Wing span
64 ft 3 in  ·  19.58 m
Baggage volume
113 ft³  ·  3.2 m³
Gross weight
Empty weight
Max takeoff weight
48,200 lb  ·  21,900 kg
Max landing weight
38,000 lb  ·  17,200 kg
Max payload
4,800 lb  ·  2,200 kg
Fuel capacity
3,300 gal · 12,500 L · 10,000 kg (Jet A)
Max cruise speed
488 kt  ·  562 mph  ·  904 km/h
Maximum speed
Cruise speed
Approach speed
96 kt  ·  110 mph  ·  178 km/h
Range
4,524 nm  ·  5,210 mi  ·  8,380 km
Fuel burn
Ceiling
45,000 ft  ·  13,700 m
Rate of climb
4,345 ft/min  ·  22 m/s
Takeoff distance
5,650 ft  ·  1,720 m
Landing distance
3,850 ft  ·  1,170 m
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Nextant 604XT cockpit 1

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Operational Context

Nextant 604XT — remanufactured large-cabin business jet

The 604XT program targeted existing Challenger 604 aircraft for refurbishment and modernization. Upgrades included new avionics and cabin enhancements while retaining the original airframe. The aircraft preserved the swept wing and twin-engine configuration of the Challenger series.

Powered by two General Electric CF34 turbofan engines producing approximately 8,700 pounds of thrust (38.7 kN) each, the 604XT cruises at around Mach 0.82, approximately 470 knots (870 km/h). Maximum takeoff weight exceeds 48,000 pounds (21,772 kg). The cabin accommodates multiple seating zones.

The 604XT offered an alternative to purchasing new large-cabin jets. The program highlighted the value of extending service life through modernization. Production remained limited to conversion projects.