In article ,
Chad Irby wrote:

In article ,
Mark Schaeffer wrote:

[...]

The A-12 was the first aircraft to reach Mach 3 and return in one
piece.

[...]

What are the dates for A-12 and X-15 first flying at Mach 3.0+?

THe F-15 didn't do it in one piece. It left a B-52 behind.

Of course, I meant *X-15*.

--
cirby at cfl.rr.com

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Slam on brakes accordingly.