By Isabel Goyer Longtime head of EAA Tom Poberezny has died this morning, Monday, July 25, following a short illness, according to a family friend who shared the news with Plane & Pilot. Poberezny was 75 years old. The son of EAA founder Paul Poberezny and Audrey Poberezny, Tom became Oshkosh Fly-in Chairman in 1977, and took the reins of EAA in the early 90s and served as president and chairman for two decades, leading the organization to a world-class profile and taking it from a gathering of homebuilt and small plane enthusiasts to an organization that embraced every aspect of flight. He wa…