Fabrica de Avione S.E.T / Societatea de Exploatari Technice
The Societatea de pentru Exploatari Technice (SET) works, founded in 1923 Fabrica de Avione S.E.T as a manufacturing subsidary, and was the third Romanian company to manufacture aeroplanes. Its aircraft production actually started only in 1927 with the SET-3 trainer. Until then, since 1924, only repair work had been performed there.
Developed aircraft designed by Grigore C Zamfirescu for Divisia l-a Aeriana. Designs included S.E.T. 7 biplane trainer, S.E.T. 7K reconnaissance variant, S.E.T. 10 biplane advanced trainer, S.E.T. XV biplane fighter; also made Fleet 10G trainers. SET X was single-seat fighter/trainer biplane; SET XV single-seat fighter biplane with enclosed cockpit, built in small numbers for Romanian Air Force during early 1930s; SET 7 was a specially equipped trainer; SET 7K a reengined observation derivative ordered in series by Romanian Government. Later SET 31 also adopted officially.