And a PAK FA programme timeline from the KNAAZ insiders (for 10.08.2015):
Т-50-1 - 219 fh, 197 landings.
Т-50-2 - 221 fh, 221 landings. 24.07.2015 sideway weapons bay has being destructed under VPU-50 (ВПУ-50) short range AAM launcher test. Aircraft has been repaired, a new sideway weapons bay (БГрО) design has been developed and will be applied to T-50-6-2 Stage II prototype.
Т-50-3 - 300 fh, 151 landings. Fuselage fuel tank has leaked near the left intake. Aircraft has being repaired and having further tests preparations in LII (Zhukovskiy).
Т-50-4 - 169 fh, 106 landings.
T-50-5R (repaired) - a T-50-5 after fire repair project has been completed, giving the tech guys fucking valuable experience in composite parts repair process. Will be delivered to LII in this October or November.
And the best part:
A Stage II prototype T-50-6-2 has been assembled and now undergoes systems debugging, structure tests, and ATTENTION!!! the first time in T-50 history a RAM coatings application!!!
The 1-st flight is planned - on 01.12.2015, then the bird will be transported to LII and will undergo complete RF/RCS trials. After that it will pe sent to the rest ones for pre-production flight tests on 15.01.2016 (planned).
T-50-8 - the second Stage II prototype undergoes assembly process and will be delivered in the middle of 2016.