Gulfstream G-400

Formerly known as the Gulfstream GIV-SP, the G400 combines all the hallmarks of earlier Gulfstream designs - including a large, comfortable cabin with seating for as many as 16 passengers - with added speed and range. Gulfstream introduced the reclassified G400 in 2008, touting an additional 1,400 lbs of payload capacity thanks to strengthened landing gear, improved electro-mechanical brakes, and slight alterations to the wing and tail. One of the most significant improvements is the change of engines from the Rolls-Royce Spey to the Rolls-Royce Tay Mk 611-8 series, providing 13,850 lbs of thrust apiece with an 8,000-hour inspection interval. These upgraded engines are responsible for a 15% increase in fuel economy and decreased noise levels, all while allowing the G400 to fly up to 14 passengers 4,100 nm nonstop, at speeds up to 0.88 Mach.