The Lockheed SR-71 Blackbird averaged a whopping 1,435.59 mph whilst covering near 5,450 miles during its trip from London to L.A. and was banned from going supersonic until they left the U.K.

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The Lockheed SR-71 Blackbird averaged a whopping 1,435.59 mph whilst covering near 5,450 miles during its trip from London to L.A. and was banned from going supersonic until they left the U.K. - Did You Know?

Did You Know?

The Lockheed SR-71 Blackbird averaged a whopping 1,435.59 mph whilst covering near 5,450 miles during its trip from London to L.A. and was banned from going supersonic until they left the U.K.