The prototype fuselage of the first SSJ New jet, which was built by Russian aerospace manufacturer United Aircraft Corporation (UAC), was delivered to the Central Aerohydrodynamic Institute (TsAGI) near Zhukovsky International Airport (ZIA) in Moscow for testing.  

The fuselage has been constructed using entirely domestic components, a source close to  Russian state-owned defense conglomerate Rostec told TASS on July 28, 2022.

It will now undergo life cycle testing at TsAGI facilities in Moscow where engineers will need to compound the plane body with wings, a vertical fin and a horizontal stabilizer.  

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SSJ New: how and why is Superjet 100 shedding American parts?
There were many problems with the new Russian regional airliner program right from the beginning. One of them – at least according to some – was the fact that the aircraft itself was not really that Russian. United Aircraft Corporation (UAC) is slowly trying to change that, but the task is not as easy as it appeared at first.
 

The SSJ-New, which is the 'Russified' variant of the SSJ 100, features composite wing and indigenous avionics. The regional airliner is set to be powered by a new domestic high-bypass turbofan Aviadvigatel PD-8, based on the larger PD-14, which is currently under development.  

Both the PD-8 and the SSJ New have been under development for some time now. While it the was initially intended that the aircraft would be sold to Iran, the project has faced multiple delays. However, sanctions imposed on Russia by Western countries following its invasion of Ukraine have accelerated the aircraft’s development.   

As part of the initial development plan, around 45% of the aircraft’s components were to be manufactured in Russia. But as much as 97% of the jet’s imported components were to be replaced by domestically manufactured parts. 

Serial production of the plane is scheduled to begin in 2023, with commercial deliveries expected to begin in 2024.  

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Russia tests nacelle for PD-8 engine dedicated to power the SSJ-NEW jet
Russia’s Central Institute of Aerodynamics tests a nacelle for the domestically build PD-8 engine expected to power the SSJ-NEW aircraft.