This is literally Boeing and Airbus' worst nightmare, which they did all in their power to avert but failed.
No aircraft in history has been subjected to so many sanctions and outright sabotage. But here it is--fully Russian MC-21. Everything, from engines, to APU, to composites and state-of-the-art wing, to cabin and advanced avionics, to other systems--all made in Russia. That makes this state-of-the-art aircraft impervious to any sanctions from the West and it makes it a direct (no, not COMAC-919) and tough competitor to Boeing and Airbus aircraft (B-737 and A-320,321) in the most lucrative segment--single isle, narrow body medium range commercial aircraft. It is a historic event.
