During the course of 1931, the Central Repair Workshops
at Szekesfehervar-Sosto began construction of
the AVIS (Anderlik-Varga-Iskola-Sport) aircraft, ostensibly a single-seat trainer and sports aircraft, but, in
fact, a fighter intended for use by the Legtiyi Hivatal
(Aviation Department), the clandestine Hungarian air
arm. An all-metal, single-bay, staggered biplane designed
by Prof Elöd Abody-Anderlik, Laszlo Varga, Istvan
Liszt and Deszo Fridrik, the first aircraft, the AVIS I,
was completed and flown in 1933. Powered by a 420hp
Manfred Weiss-built Jupiter VI nine-cylinder radial, intended
armament being twin synchronised 7.62mm
Gebauer machine guns, the AVIS I proved seriously
underpowered, prompting major redesign as the AVIS
II. The sole example of the AVIS I was eventually delivered
to the flying school at Szombathely where it was
to serve until 1936.
