The Soviet post-PFI projects are several Soviet and Russian Air Force projects initiated to replace the PFI-era aircraft.
During the mid-1970s, the Soviets initiated the I-90 fighter project, Sh-90 attack aircraft project, B-90 bomber project and M-67 reconnaissance aircraft project. The I-90 consisted of a heavyweight fighter project (MFI) and a lightweight fighter project (LFI). The LFI was subsequently cancelled and replaced by the LFS during the early-mid-1990s. In the early 2000s, both the MFI and LFS projects were canceled in favor of the PAK FA program.
The Sh-90, B-90 and M-67 projects were never realized, although Yakovlev's and Mikoyan's entries for the Sh-90 were based on the Yak-130 and MiG-AT, respectively. Both are trainer aircraft currently being offered for sale by the two companies, with the Yakovlev Yak-130 accepted into service and starting to replace Aero L-39 Albatros as the primary jet trainer of the Russian Air Force. Sukhoi, Mikoyan and Yakovlev were the major competitors in these projects, although Tupolev and Myasishchev may have also submitted entries for some projects.