Gulfstream GIIB Performance Gulfstream GIIB Performance Description | Performance | Cabin ® Takeoff at Sea Level, feet 5,115 Landing Distance, feet 3,250 Certified Ceilings, feet 45,000 Fuel Consumption, gallons per hour 514 Total Variable Cost $3,592 High Speed Cruise, knots 488 Range, Four Pax, Nautical Miles (NM) 3,523 600 NM Mission, Fight Time 1+26 1000 NM Mission, Flight Time 2+21 Performance Ranges (Full Seats/Full Fuel) Airport Performance/ Takeoff Distance.