NASA released video footage of the SR-71 Blackbird, the high-altitude recon aircraft capable of reaching speeds over Mach 3. More from Military & Defense A triangle pointing right which indicates ...

The SR-71 “Blackbird” broke the world’s record for sustained altitude in horizontal flight in 1976 when it flew at Mach 3.3 (times the speed of sound). As of 2025, no fighter or proposed ...