La fiche wikipedia sur le CR929: https://en.wikipedia.org/wiki/CRAIC_CR929
The aircraft’s composite wings and empennage will be produced in Russia, while Comac will produce the fuselage and perform final assembly in Shanghai. Russia will also produce the tail section.
During a briefing at the Paris air show, UAC showed a chart indicating that approval of concept for the widebody should take place in 2017, followed by early configuration and preliminary design in 2018.
Design documentation is slated for 2021, followed by first flight in 2023, before the aircraft enters service two years later.
Initially, the aircraft will be powered by an engine from one of the major Western engine makers, such as Rolls-Royce or General Electric.
An indigenous power plant will also be developed. Russia’s United Engine Corporation and China’s commercial aircraft engine firm AECC recently signed a preliminary agreement on developing an engine to power the CR 929 family.
(extrait de https://www.flightglobal.com/news/articles/uac-and-comac-christen-widebody-family-as-cr-929-441648/ )
Under the proposed schedule the engine would commence testing in 2022 and secure certification in 2027.