Engineering Holding

Engineering Holding (now doing business as S7 Technics) is a Russian company specializing in aircraft maintenance, repair, and overhaul. The company's full name was originally "Engineering – the Aviation Maintenance Holding", but has been rebranded as S7 Technics Holding. Its headquarters are in Moscow, Russia.
The company is owned by S7 Airlines, which is owned by Vladislav Filev. The company owns Epic Aircraft, headquartered in Bend, Oregon, United States.