Bleriot-SPAD S.33
1920
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Bleriot-SPAD S.33

The prototype (F-CMAZ) of the Bleriot-SPAD S.33 first flew on 12 December 1920. This, and early production aircraft, were powered by a single 186kW Salmson radial, but later machines had a 194kW Salmson. Four passengers were accommodated in comfortable wicker armchairs in an enclosed forward cabin, and provided with a good view through three porthole windows on each side of the fuselage. Behind them in side-by-side open cockpits were the fifth passenger (to starboard) and the pilot.

The S.33 was a great success, with 41 examples being built. Fifteen flew with the Messageries Aeriennes company, later incorporated in Air-Union; 20 were used on the routes between France and eastern Europe operated by the Compagnie Franco-Roumaine; and five were bought by the Belgian SNETA company, which was absorbed in the SABENA national airline in May 1923. S.33s became a familiar sight to passengers at most European commercial airports.

In 1925 the Franco-Roumaine company re-formed as the famous CIDNA (Compagnie Internationale De Navigation Aerienne), with Maurice Nogues as chief pilot. CIDNA's routes, which linked Paris with many east European capitals, were extended to Constantinople (now Istanbul), and the backbone of these services was the S.33. In May 1926 the Air-Union company inaugurated a direct service from Paris to Marseilles, utilising five S.33s and one S.56-3.

S.33 F-AICC was modified, by the incorporation of a larger wing and dual controls, for service as a blind-flying trainer for CIDNA pilots. The pupil pilot flew the aircraft from within the cabin, which had its windows blacked out!

The S.33 and its developments dominated the field of smaller European transport aircraft right through the 1930s.

Bleriot-SPAD S.33


Specification 
 MODELBleriot-SPAD S.33
 ENGINE1 x Salmson CM.9 radial piston engine, 194kW
 WEIGHTS
    Take-off weight2062 kg4546 lb
    Empty weight1050 kg2315 lb
 DIMENSIONS
    Wingspan11.66 m38 ft 3 in
    Length9.08 m30 ft 9 in
    Height3.2 m11 ft 6 in
    Wing area42.18 m2454.02 sq ft
 PERFORMANCE
    Max. speed180 km/h112 mph
    Cruise speed160 km/h99 mph
    Ceiling3800 m12450 ft
    Range1080 km671 miles

Comments
Michael S. KOZIOL, 27.01.2017

I am researching the emergency landings of CIDNA airplanes. Are you able to tell me if the planes F-FRER and F-AJQA Bleriots? If yes: What a type? Thank you. Michael S. Koziol

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