Stinson 108

The single-engine, four-seat, fixed-gear, high-wing, Stinson 108 series was built with a six-cylinder Franklin engine -- 6A4-150, or 6A4-165, normally -- driving a fixed-pitch propeller. The fuselage is of fabric-covered steel tube. Aftermarket modifiers have obtained supplemental type certificates (STC) allowing conversion to an aluminum covering. Many different engines have been installed in the 108 by STC such as the Lycoming O-360, Franklin O-350, Continental O-470. In 1948, however, overproduction in the US general aviation industry led to a glut of light aircraft, with unsold 108s being stored, and on 30 June 1948, Convair shut down the Stinson factory. The name and assets of Stinson (including 200 unsold 108s) were sold to Piper Aircraft on 1 December 1948, with Piper setting up a Stinson division in April 1949 to sell the complete aircraft inherited from Convair, and to assemble a further 125 aircraft from spare parts. These aircraft were marketed as Piper-Stinson 108s. Total new production of the Stinson Model 108, by Stinson, was 5,260; this total does not include the two converted prototypes. Stinson delivered approximately 4,935 aircraft and Piper delivered approximately 325 aircraft. Piper later sold the type certificate to Univair Aircraft Corporation. Univair built and certified the model 108-5, but built only one example. Total new model production by Stinson and Univair was 5,261 aircraft. ==Variants==

The 108 variants closely resemble each other but can be visually distinguished by their design changes: ;Prototype 108 :Two prototype model 108s were converted from Stinson model 10A airframes. FAA records show NX31519 was model 108 serial number 1, and NX31532 is model 108 serial number 2. Both registrations later changed to NC. The production model straight 108 would also use serial number 1 and 2, so there was for a short period 2 duplicate serial numbers; 742 built in 1946. ;108-4 :The 108-4 is a higher powered model 108, sn 108-4693, NX149C, not certified, flown experimentally by Stinson, later by Piper, 1 built. The 108-5 brought total model 108 production to 5,261, of which 5,135 were built by Stinson, 125 by Piper, and 1 by Univair. ==Operators==

; • Spanish Air Force operated eighteen 108-3 aircraft, with the designation L.2. ==Specifications (108 Voyager 150)==