Kyiv state aviation plant «Аviant» established on September 9, 1920 by decree of Military Industry Council № 15178 under name “State aviation plant № 12 (SAP-12)”. It was founded on the base of small repair shops apart and was situated before war on Harmatna Street.

First director (manager) of plant and, actually, its organizer was professor Viktorin F. Bobrov (further – rector of Kyiv polytechnician and Moscow aviation institutes).

Plant performed repair of aircraft of foreign types being on army’s service. Plant did not have own airfield, so tests of aircraft performed on Post-Volyn airfield (Zhuliany).

In 1922 plant was renamed for «РЕМВОЗДУХ-6» (“Rem-Air-6”).

In 1925 under leadership of designer К.А. Kalinin was designed and manufactured first in country 4-place local passenger aircraft К-1. Thanks to self-sacrificing work of plant employees (all works performed on overtime and holydays) on June 26, 1925 aircraft К-1 flew to the sky

In 1924 plant was fully electrifed; was mounted steam heating in assembly shop

In 1927-1929 being repairing already domestic types aircraft R-1 and R-5, plant employees designed and manufactured glider «Гриф»/”Gryph” (“Vulture”) which won first place on All-union competitions of gliders in Koktebel.

In 1931 plant was remaned in «Plant № 43».

In 1932 on plant was produced furst in country autogyr «4-ЭА» ЦАГИ.

In 1932-1934 on plant was put into serial production first domestic speedy six-place passenger aircraft ХАИ-1 designed by professor I.H. Neman. Aircraft ХАИ-1 had speed 324 km/h, ceiling 7000 m, range more than 1000 km, payload up to1000 kg. ХАИ-1 became first in Europe passenger aircraft with retracting landing gear.

Maiden flight of aircraft ХАИ-1 took place on October 8, 1932, plant produced total 43 such aircraft

In 1937 was produced, and in 1938 successfully tested passenger aircraft ОКО-1 designed by V.K. Tairov.

In 1939-1941 plant produced units for aircraft «MiG».

On June 22, 1941 USSR entered in World War II; on June 25, 1941 plant was bombed out. 38 men died, 78 were wounded, much of important equipment was destroyed.

Plant was evacuated to Novosibirsk where on plant named after V.P. Chkalov fighters Yak-3, Yak-9 designed by A.S. Yakovlev produced.

After releasing “ on November 6, 1943 of Kyiv from fascists plant came back from evacuation and till the end of war performed repair of aircraft ПО-2 and assembly of aircraft Yak-3, Yak-9 of aggregates sent from other plants.

In 1944 plant was renamed in «Plant № 473» or «Organization mailbox № 11»

After the end of World War II plant finally had its present place (Sviatoshyn) which development began before the war.

In 1945-1946 plant had been working on producing of specimen of helicopter Г-4 designed by I.P. Bratulhin. During tests significant misculculations in design were found, and helicopter wasn’t put into serial production.