Bob and Flo Irwin were posthumously inducted into the Homebuilder’s Hall of Fame at the EAA Museum in Oshkosh, Wisconsin on November 11, 2021. Bob and Flo Irwin founded Fullerton Air Parts (1956), Aircraft Spruce & Specialty Co.(1965), and ACS Products Co. (1983) as supply companies to the sport aviation community. Jim Irwin, President of Aircraft Spruce and John Irwin, President of ACS Products Co. accepted the awards on behalf of their parents from EAA President Jack Pelton and Homebuilt Aircraft Council Chairman David Forster.