| Country of origin: | United States of America. |
| Description: | 4/6-seat light cabin monoplane. |
| Power plant: | Two 210-hp Continental IO-360-CD 6-cylinder horizontally opposed air-cooled engines. |
| Specifications: | |
| Wingspan: | 11.58 m (38 ft) |
| Length: | 9.07 m (29 Ft 9 in) |
| Height: | 2.85 m (9 ft4 in) |
| Wing area: | 18.67 m2(201 sq ft) |
| Max speed at sea level: | 200 mph |
| Cruising speed at 75% power at 5500ft: | 192 mph |
| Initial rate of climb: | 1300 ft/min |
| Service ceiling: | 20500 ft |
| Max range at 141 mph at 10000ft: | 1390 miles |
| Empty weight: | 1190.74 kg (2625 Ib) |
| Loaded: | 1905.12 kg (4200 Ib) |
History:
The Cessna Model 337 series was introduced to the company's range in February 1965 to replace the Model 336 on the production line. It continued the centreline thrust concept of the previous model. and bore a close resemblance to it. A number of major changes were introduced to enable the aircraft to compete in performance with conventional twins of similar size and power. In addition to mom powerful engines. and a fully retractable tricycle undercarriage, the Model 337 had an increased wing incidence angle. improved forward visibility resulting from relocation of the forward engine, a redesigned cowling, a fixed dorsal air intake for cooling the rear engine, variable cowl flaps, increased tail boom angle, and a wider chord elevator.
This model proved to be more successful than the Model 336. and over 2000 were built. At least 1 was fitted with Pee Key amphibious floats in the USA. A few variants were developed to meet customer demand, and in addition to the standard aircraft, the Turbo-System Super Skymaster with turbocharged engines had the ability to be flown at higher altitudes and from higher airstrips. This model was only in production for a short period when it was superseded by the Model P337 Pressurised Skymaster, the prototype of which was flown on 23 July 1971. This was the cheapest twin-engine pressurised aircraft available at that time.
In 1975 and 1976 two new models were added to the range. Fully equipped IFR models. the Skymaster II and the Pressurised Skymaster II. Incorporated as standard equipment an extensive package of avionics and accessories. In 1976 flap extension speeds were reduced and aerodynamics and sound-proofing were improved.
In 1977 a new model was fitted with a Bendix weather radar mounted in a fibreglass pod that was attached to the front and rear spars below the right wing. This pod was located just outboard of the strut and did not alter flight characteristics.