SIAI-Marchetti S-205/208


Country of Origin
Four seat light aircraft
SIAI-Marchetti intended that this series of four seat light aircraft would provide it with a re-entry into the GA market. When SIAI-Marchetti began work on the S-205, a modern four seat light aircraft design, in the mid '60s, the company intended to develop a series of aircraft with various powerplant and other options, such as retractable undercarriage and constant speed propellers. To this end the company was modestly successful, with several hundred S-205s and larger S-208s built, with most sold to European customers. The first of three S-205 prototypes flew for the first time during 1965. This initial aircraft was powered by a 135kW (180hp) Lycoming O-360 and featured a fixed undercarriage. In production it became the S-205-18F (18 for 180hp, F for fixed undercarriage). The first production S-205-18F flew in February 1966 and deliveries commenced later that year. The model lineup was expanded to include the 150kW (200hp) fuel injected IO-360 powered and higher max takeoff weight S-205-20F, and the retractable undercarriage S-205-18R and S-205-20R. The most powerful member of the S-205 family was the S-205-22R. This aircraft was powered by a 165kW (220hp) Franklin 6A-350-C1 flat six and was also assembled in the USA by Waco as the four seat S-220 Sirius and five seat S-220-5 Vela. Production of the S-205 initially ceased in 1975, although SIAI-Marchetti returned the S-205-20R to production from 1977 until 1980 to meet an order for 140 for the Italian Aero Club. The S-208 is based on the S-205 but has a larger cabin with seating for five. First flown in 1968, it is powered by a 195kW (260hp) Lycoming O-540 and has retractable undercarriage, a third cabin window per side, optional tip tanks and strengthened structure. Deliveries commenced in 1968, and 44 were built for the Italian air force as S-208M. Production closed in 1975 and then resumed in 1977 alongside the S-205-20R until finally ceasing in 1980. International Directory of Civil Aircraft
S-205-20 - One 150kW (200hp) Lycoming IO-360-A1B6D fuel injected flat four piston engine driving a two blade constant speed propeller. S-208 - One 185kW (260hp) Lycoming O-540-E4A5 flat six.
S-205-20 - Max speed 270km/h (146kt), max cruising speed 250km/h (136kt), normal cruising speed 243km/h (131kt). Initial rate of climb 826ft/min. Service ceiling 15,575ft. Range 1260km (680nm). S-208 - Max speed 320km/h (173kt), max cruising speed 300km/h (162kt). Initial rate of climb 985ft/min. Service ceiling 17,725ft. Range with tip tanks 1800km (970nm).
S-205-20 - Empty 760kg (1677lb), max takeoff 1300kg (2865lb). S-208 - Empty 827kg (1823lb), max takeoff 1500kg (3307lb).
S-205-20 - Wing span 10.86m (35ft 8in), length 8.00m (26ft 3in), height 2.89m (9ft 6in). Wing area 16.1m2 (173sq ft). S-208 - Same except span over tip tanks 11.23m (36ft 10in), length 8.09m (26ft 7in).
Typical seating for four in S-205, up to five in S-208.
Approx 620 S-205s, including 62 S-220 Sirius and Vela assembled by Waco in the USA. Approx 120 S-208s built, including 40 for the Italian air force as S-208M.
Related Links
SIAI-Marchetti S-205/208
The backbone of this section is from the The International Directory of Civil Aircraft by Gerard Frawley and used with permission. To get your own copy of the book click here.