Russia’s Defense Ministry will get the first serial-produced Su-57 fifth-generation fighter in December, a source in the defense industry told TASS on Monday.

"The Defense Ministry will get the first serial-produced Su-57 with the operational first-stage engine on the single military output day in December this year and four more such planes in 2021," the source said.

The new fighter’s delivery rate will eventually grow to 15 aircraft a year, the source said.

"As a result, the contract signed in 2019 on 76 Su-57s through 2028 will definitely be fulfilled on time," the source stressed.

The deliveries of Su-57 fighters with the second-stage engine are set to begin in 2022, the source said.