August 19: National Aviation Day

In 1939, National Aviation Day was established to promote air transportation in the United States. The date chosen was August 19, the birthday of Orville Wright, who piloted the first recorded flight of a powered heavier-than-air machine on December 17, 1903. Orville was born in Dayton, Ohio, while his partner and older brother, Wilbur Wright, was born on a farm near Millville, Indiana.

http://www.almanac.com/calendar/date/2012-08-19

Do you know which president established this holiday in 1939?