Another year on the hook, that's what the FAA is telling EAA today.
Due to a lack of federal funding, the EAA will have to pay an estimated $500,000 to the federal government for air traffic controllers.
Since 2013, Airventure organizers have had to pay for the controllers due to sequestration.
Senator Ron Johnson says he is pushing for a bill that would fund the event.
Oshkosh's Wittman Regional Airport famously becomes the "busiest in the world" during Airventure.