Societe De Recherches Et De Constructions Mecaniques / SRCM

Originally a specialist in aircraft hydraulic systems, began small-scale construction of aircraft for other small manufacturers. After failing to obtain a license to build the CAB Supercab, designed a new lightplane known as the SRCM-153 Joigny, which first flew in March 1960. This was a three/four-seat monoplane with rectractable landing gear, powered by a Lycoming engine.

Societe D’emboutissage et de Constructions Mecaniques / SECM

Founded 1916 by Felix Amiot. During First World War built Morane, Breguet and Sopwith types. After war repaired Breguets, and from 1921 helped in construction of early Dewoitine monoplane fighters. Specialized in metal stamping and press-work. Lutace of 1921 was side-by-side two-seater biplane using special form of steel-tube construction of SECM design. SECM 12 was two-seat single-engined night bomber (developed as SECM-Amiot 120B.N.2); 22 was trainer for French competition of 1923; 23 was 3- seat tourer; 24 an elementary trainer. Firm also made Lorraine-Dietrich aero engines, as fitted in Amiot-SECM (or Amiot) 122 series of late 1920s.

Societe Anonyme Pour La Realisation D’avions Prototypes / S.R.A.P.

Established at Billancourt in 1926 to build aircraft to the design of Louis Becherau, formerly with Deperdussin and SPAD. First production design was the C.2, a two-seat monoplane powered by a 500hp Salmson engine.

The Paris-based S.R.A.P. is often listed as the ‘Société pour la Réalisation d’Appareils’. Flight truncated the name as ‘Société pour la Réalisation d’Avions’. However, ‘Prototypes’ seems important as it suggests that S.R.A.P. did not intend to manufacture aircraft designs in series.

Societa Idrovolanti Alta Italia / SIAI

Italy

Forerunner of the Siai-Marchetti organization (see Siai-Marchetti Societa Per Azioni). Founded 1915 by Luigi Cape at Sesto Calende, with a seaplane base on Lake Maggiore. As Idrovolanti Savoia built FBA flying-boats under license. Name “Savoia”had a geographical and historical connotation (House of Savoy), and after the war new flying-boats were known by the name Idrovolanti Savoia, or Savoia. These achieved early distinction, notably in the 1920 Schneider Trophy contest. Names Savoia and Marchetti were linked in 1922, when Alessandro Marchetti became technical director of company renamed Societa Idrovolanti Alta Italia—Savoia-Marchetti. In 1925 the company gained publicity when an S.16ter was flown to Australia and Tokyo and back to Italy by Francesco De Pinedo. Famous types included the twin-hulled S-55 which, though first flown in 1924, is remembered chiefly for General Balbo’s mass-formation flights of 1930 and 1933. Special long-range landplane S-64 broke world’s duration and distance records in June 1930. Initials S. M. for type numbers were not commonly applied until later, and then particularly in association with fast 3-engined civil and military types. Most famous was S.M.79 bomber and torpedo bomber of Second World War. Civil types included the record-breaking S.M.75 of 1939. Last Second World War aircraft was S.M.91 twin-boom fighter-bomber, but S.M.84 bomber served as transport until 1948.