They have aircraft at Lipetsk, and aircraft at GLITs, a full regiment at Voronezh (24 serial Fullbacks, with one perserial being used for training) and a second regiment being re-armed right now. I'm not sure how far along they are, but Havaarlas number of 57 doesn't sound wrong.Compared to their sister airframes in the Flanker series, I suppose. Or if we're going by role, then the Fencer. I didn't realise they were up past thirty, from the information I had there were some issues with slow production lines. Of course if you have better information and can share I'd be very grateful.
Haavarla, thanks for your information too, and I agree, these encounters will not end with the advent of Norwegian F-35s. I'm a firm believer in the aircraft but it doesn't mean certain entities are immediately going to stop poking around your airspace...
According to MilitaryRussia, they're at 42 aircraft (33 serial ones) through the middle of 2013. If you add the rest of 2013, and 2014, we could easily have over 50 serial airframes. I don't recall seeing anything about a third regiment entering re-armament, but still. Depending on how many airframes they keep at GLITs and Lipetsk, they could start the 3rd regiment at 58 airframes.
NAPO had production problems in the 2006-2009 time frame. After that things changed rather drastically. The Russian government used the traditional method of throwing money at the problem to fix it. In this case it worked. NAPO management poached workers from elsewhere, including Ukrainian workers from Aviant in Kiev, and imported foreign machinery to modernize the production line. Consequently they can now spit out over a dozen aircraft a year without a hitch. As long as the money is there, that is. So we can expect more and more Fullbacks in coming years. Also there is some discrepancy. The newer ones carry Sorbtsiya pods in the wingtips, but the older ones don't. It's not clear whether all new-builds will have them.