Celebrating 90 years of competition Event coverage As seen in the November 2016 issue of Model Aviation. The 2016 Nats celebrated 90 years of competition, and ran from June 24 through August 4. The Outdoor Nats events were held at the International Aeromodeling Center (IAC) at AMA Headquarters in Muncie, Indiana. The Indoor Nats took place at the Rantoul National Aviation Center in Rantoul, Illinois.