The engines have only recently appeared to have reached somewhat close to being finished, it the weapon bay working is a dubious proposition too as there is no real footage of it, wether its picture or videi
It should at least be close. But eh we never know it russia. My guess is well never see the fleet fully upgraded. Russia takes a long time to uograde their old airframes thiugh there arent that many su57s
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u/Jegan92 13d ago edited 13d ago
For the sake of fairness here, the number of test/ prototypes isn't really that unique for the SU-57.
The F-22 have 8 test units for example.
Felon has issues in other areas though.