Learjet 55 Performance Description Performance Cabin Gates Learjet 55 Performance ® Takeoff at Sea Level, feet 5,600 Takeoff at 5000′ 25°C, feet 9,400 Landing Distance, feet 2,800 Certified Ceilings, feet 51,000 Fuel Consumption, gallons per hour 188 Total Variable Cost $1,675 High Speed Cruise, knots 458 Ranges, Four Pax, Nautical Miles (NM) 2,039 600 NM Mission, Fight Time 1+28 1000 NM Mission, Flight Time 2+25 Performance Ranges (Full Seats/Full Fuel) Airport Performance/Takeoff Distance.