Derk Kingrey departs Hartzell Field in Piqua on Tuesday morning in his 1943 Ercoupe heading to Grimes Field in Urbana for lunch. Kingrey is an aircraft mechanic who maintains the Hartzell Propeller fleet. Last year, at AirVenture 2019 in Oshkosh, Kingrey’s Ercoupe was named Outstanding Ercoupe.