The first flying prototype of the Irkut Russian MC-21 airliner has left the assembly room floor,

The first flying prototype of the Ikrut MC-21, a Russian twin-engine short-mid-range jet airliner with a capacity of 150-211 passengers, has left the assembly room floor, Russian media reports, citing sources in the aviation industry.

https://sputniknews.com/business/201705041053271108-first-irkut-mc21-produced/

Original, in Russian: https://ria.ru/economy/20170504/1493629349.html (and automatic translation, via Google here)