Mach 3, officially.
2193 mph
The SR 71 was a very secret high speed, high altitude reconnaisance aircraft. Only 32 were built, at enormous cost.
It is the Lockheed SR-71 "Blackbird", a reconnaissance aircraft.
Because dull black is the best colour for spy aircraft
No it is an advanced, long range, Mach 3+ strategic reconnaissance aircraft.
http://www.aerospaceweb.org/aircraft/recon/sr71/sr71_11.jpg
The Lockheed SR-71 "Blackbird" aircraft has a top speed of 2,200 mph.
it has two vertical stabilizers that have flaps that move the aircraft by moving the air around the SR-71.
It reached a published speed of 2,196 miles per hour and it's unclassified speed was 3.3 mach. Actual top speed is now and forever will be classified. It flew so fast that the crews had to wait a few minutes after landing to let the skin cool down.
About 3 times the speed of sound. (3 mach)
What is SR71 auto insurance
The question is not defined to be answered properly A Cessna propeller driven light aircraft is much slower than a 747 But a SR71, the current record holder for speed is also much smaller than a 747