1) T-50S-1, serial No. 51001, b/n 01, was built in 2019 and broken up in December of the same year.
2) T-50S-2, serial No.51002, b/n 01, built in 2020, delivered to the Ministry of Defense on 01/29/2021.
3) T-50S-3, serial No. 52201, b/n 51, was built in 2021, and presumably commissioned at the end of 2021 or January 2022. He didn't shine in any of the photos, but he was mentioned in this news, which was later quoted on forums.
4) T-50S-4, serial No. 52202, b/n 52, built in 2021, handed over to the Ministry of Defense also presumably at the end of 2021 or January 2022. He appeared once in a video from KnAAZ.
5) T-50S-5, serial No. 52303, b/n 02, reg. number was not applied, built in 2021, commissioned in January 2022. There are photos on 02/03/2022 in Tolmachevo.
6) T-50S-6, series No.52304, b/n 52, reg. RF-81775, built in 2021, commissioned in January 2022. There are photos on 02/03/2022 in Tolmachevo.
7) T-50S-7, series No.52405, b/n 53, reg. RF-81777, built in 2022. There are photos on 05/27/2022 in Tolmachevo.
8) T-50S-8, series No.52406?, b/n 54, reg. No. RF-81778, built in 2022. There are photos on 05/27/2022 in Tolmachevo.
9) T-50S-9, series No.52507