Air Shows & EventsAirVenturefeatures_oldOshkosh 2000 Image Gallery: Day Three, Picture 19By Editorial Staff - Published: July 27, 2000 Updated: June 13, 20190PrintEmailFacebookTwitterLinkedin “Fred Flintstone’s Homebuilt.”A stone-age ornithopter (a machine shaped like an aircraft that is held aloft and propelled by wing movements.) making the rounds at AirVenture.This page best viewed at 800×600 or better