Beginning in late 1948, Cessna began selling the Cessna 170A, an all-metal Cessna 170 with dihedral-less wings and a single strut, replacing the earlier "V" strut of the 170.
Beginning in late 1948, Cessna began selling the Cessna 170, with metal fuselage and tail and fabric covered wings. In 1949 they released the Cessna 170A, an all-metal Cessna 170 with dihedral-less wings and a single strut, replacing the earlier "V" strut of the 170.