3rd C919 for Air China conducting flight test with its ram air turbine (RAT) deployed as one of the test requirements. Posted by @9x9走向商业成功之路 on Weibo.
1st C919 for Suparna Airlines was supposed to be delivered in Q4 2024. But so far, there hasn't been any indication of it. May be this would be the first C919 to have an all-economy class cabin.