Hitting a speed of about 800 miles per hour, Chuck Yeager broke this barrier in October 1947
[DOC] [TLE] Honoring 100 Aviation Heroes - First Flight Foundation [PAR] Aug 13, 2013 ... On Oct. 14, 1947, Captain Chuck Yeager, a WWII fighter pilot, became the first 
to break the sound barrier in a needle-nosed Bell X-1.