The AN-158 is a regional jet of a new generation intended to carry up to 99 passengers over a range up to 4000 km. It is designed on a basis of AN-148 regional jet. The AN-158 has high commonality with its predecessor, in particular, they have common main systems, engines, cockpit and flight control system, MRO, flight crew training system. Comfort level of these airplanes correspond to the most modern airliners, their characteristics and safety level meets current and prospective world standards and requirements. The AN-158 performed its maiden on April 28, 2010. Till the end of 2011, ANTONOV completed wide programme of the aircraft certification. On February 28, 2011, the aircraft received Certificates issued by Interstate Aviation Committee and State Aviation Administration of Ukraine. They confirm the aircraft compliance with requirements of AP-25 harmonized with FAR-25 and CS-25. Having completed the programme of the certification tests it started trials on widening the operational conditions. In February 2011, the AN-158 performed 16 flights in Iran. It has proved its ability to be operated from/to elevated airfields at a height of 2200 m above sea level. Serial production of the AN-158 is launched at “ANTONOV Serial Plant”. More than 200 enterprises of 15 countries are involved into cooperation on the aircraft construction. The AN-158 design allows to develop on its basis a row of new airplanes including VIP versions, freighters and special-purpose airplanes for civil and military transport aviation.