The Falcon 900 and Falcon 7X are the only trijets in production. Both feature an S-duct central engine. The 900 has the capacity for two crew members and 19 passengers. Cruise speed is 513 knots (590 mph, 950 km/h), stall speed is 85 knots (98 mph, 158 km/h), and maximum speed is Mach 0.84-0.87. The empty weight is 22,608 lb (10,255 kg) and the maximum takeoff weight is 45,503 lb (20,640 kg).