The G400, born out of G500 and G600, is intended to succeed to the G450 (an improved version of the GIV-SP), and also to fill the gap between the G280 and G500. Scheduled to begin a market entry set for 2025, the G400 will act as the entry-level aircraft in Gulfstream’s large-cabin range. The G400 has a range of 4,200 nm (7,778 km) at Mach 0.85 or 3,950 nm at Mach 0.88 with a maximum speed of 0.90. In comparison the G450 has a range of 4345nm (8,047 km) at Mach 0.80 and a maximum speed of Mach 0.88.
The new G400 will have seating for up to 12 passengers whilst there is more room on a G450, that can accommodate up to 19 passengers.
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