Boeing 747 first flight on February 9, 1969
Sure, there are probably a lot more aviation events that took place on a February 9th date in history, but these three are the ones I'm specifically familar with. Just for fun (seriously, just for fun), I'm giving you the chance to vote on which of these three remarkably significant events you feel stands out as most important! So go ahead and vote... I've got both feet firmly planted and I'm ready for the avgeeks of the world to speak : )
Boeing 727 first flight on February 9, 1963
Birth of 'Mr AirPigz' Martt Clupper on February 9, 1961 (birth photo not available!)