On 5 December 2017, the second Su-57 prototype (T-50-2, bort no. 052), fitted with the "izdeliye" 30 engine, first took off from the Gromov Flight Research Institute. The 17–minute test flight was carried out by Sergei Bogdan, Sukhoi chief test pilot. The "izdeliye" 30 engine was installed on the port-side engine position while the AL-41F1 remained on the starboard side. The "izdeliye" 30 features a new nozzle with serrated flaps compared to conventional ones on the AL-41F1 nozzle. On 8 February 2018, Russian Deputy Minister of Defence Yury Borisov said that the new engine's performance was "...difficult to judge, because all we have had is this one flight. Everything seems normal, but... many flights are to be performed. As a rule, such trials take 2-3 years". By 6 December 2019, Rostec has conducted 16 flights of the Izdeliye 30 engine to check its characteristics in various flight modes, specifically, the operation of the vectoring jet nozzle and the oil system at negative overloads.