Gulfstream Aerospace may have trumped Cessna Aircraft May 2 by achieving a speed of Mach 0.925 during a test flight of its G650, just slightly above the Mach 0.92 cruise speed of the Citation X.
The G650, still in testing, can travel 7,000 nautical miles when slowed to Mach 0.85, but it has a maximum operating speed of Mach 0.925.
The G650 is described by Gulfstream in marketing terms as “ultra-large-cabin, ultra-long-range.” The aircraft achieved the speed at 42,500 feet during a one-hour, 26-minute test flight with test pilots John O’Meara and Tom Horne aboard. (It wasn’t AOPA Pilot’s Tom Horne—but a Gulfstream-based pilot with the same name.) The pilots said the aircraft proved stable with excellent flight characteristics and “fantastic maneuver capabilities.”