The Very First Aeronca Sedan In 1947, the Aeronca Company was in trouble. A successful series of two-seater aircraft didn’t distinguish it in the slumping post-World War II aircraft market. Many manufacturers with new airplanes and thousands of surplus airplanes flooded the economy. Aeronca decided to put its eggs in the four-seat basket. The Sedan was its first and only entry into the larger airplane market. It reached production in 1948 and looked poised to take off. To access this content, you must purchase Plane and Pilot Membership.