The Chase Aircraft G-20 cargo glider evolved through stages into the C-123 Provider. From the G-20, Chase developed into the XC-123 in 1949 with a 67-troop capacity and the SC-123A in 1951. The XC-123A with four J-47 turbojet engines first flew April 21, 1951, as the first all-jet Air Force cargo transport. Chase began deliver of C-123As in 1952.