On this day in space! Oct. 14, 1947: Test pilot Chuck Yeager breaks the sound barrier in the Bell X-1, the first X-planeScienceOct 13 at 11:30 PM – Oct 14 at 12:30 PM3 outletsChicago TribuneToday in History: Chuck Yeager breaks the sound barrier Oct 13 at 11:30 PMSpace.comOn this day in space! Oct. 14, 1947: Test pilot Chuck Yeager breaks the sound barrier in the Bell X-1, the first X-plane Oct 14 at 12:30 PMThe Philadelphia InquirerToday in History: October 14, Chuck Yeager breaks the sound barrier Oct 14 at 4:10 AM