Долгое производство МС-21 и SJ-100 объяснили официально: даже Boeing и Airbus не делали самолёты сами полностью

Russia had to rework the list of systems and units for 100% domestic production

The shift to the right in the production times of the MC-21 and SJ-100 aircraft in Russia is due to the need to fully transfer the industry to domestic solutions. This was stated by First Deputy Prime Minister Denis Manturov.

MC-21 and SSJ-100 
MC-21 and SSJ-100
I can't even give examples of world practice where one company — Boeing, or Airbus, or even the entire country of the USA or the entire United Europe — would make everything entirely on its own. There are no such examples, there are not, and I don't think there will be.
Denis Manturov, First Deputy Prime Minister

According to him, Russia had to rework the entire list of systems and units for 100% own production.

Whether we want it or not — we were forced to do it, otherwise we won't have any planes at all. As you yourself understand, no one has yet managed to create an engine from scratch in four years. Therefore, here we are on the verge, on the one hand, of urgency, and, on the other hand, on the verge of security. Therefore, we must not take risks.
Denis Manturov, First Deputy Prime Minister

Earlier www1.ru reported that 400 million rubles were allocated for the modernization of the Tu-214.

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Sources
RBK

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