The Air Force still hasn't said how fast an SR-71 will go. We do know they'll fly 1800 mph without much stress.
The Cessna Citation X (that is10) is reputed to be the fastest commercial aircraft - maximum speed is Mach .91
The Russian built Tu-144 is the fastest passenger aircraft with a maximum speed of Mach 2.35. (The maximum speed for the Concord is listed as Mach 2.2.)The Russian Tu-144 was retired due to technical and safety issues.Currently in service...The fastest private passenger aircraft in service right now is the Cessna Citation X business jet. It has a max speed of mach .92
SR-71 holds the record for the fastest manned jet aircraft. The officail maximum airspeed achieved by the plane is near Mach3.5. Unfortunately it is only a spy plane or surveillance aircraft.
The fastest speed reached by a manned aircraft was during NASA's X-15 program, with a maximum speed of around 7,273 km/h (4,520 mph). This record was set in 1967 by William J. "Pete" Knight.
Cessna claims that the fastest single engine piston general aviation aircraft currently in production is the Cessna Corvalis, also known as the Cessna 400. It has a listed maximum cruise speed of 235 knots, which is 270 mph. (Cessna website.)
370 knots
Usually walking speed, -4-5 mph.
714mph
The fastest ISA clock speed is 8.33MHz.
The fastest that anything can go is the speed of light in a vacuum.
Light travels fastest in a vacuum.
John Paul Stapp ejected from an aircraft at supersonic speed. he lived thankfully :D