Originally Posted by Governator
Stolen from Wikipedia:
[I]The airport was originally named after daredevil aviator John Moisant, who died in an airplane crash on this land (which was devoted to farming at the time) in 1910. The abbreviation MSY was derived from Moisant Stock Yards, as the old airport kept NEW.
Thanks for taking the time to provide this info. As a LA. native and after living there for 21 years, before moving to an adjacent State, I had no idea how the abbreviation for the main New Orleans airport was created. What a great bit of history.