Tupolev SB 2M-100 «4 Yellow» presumably belonged to the 24th SBP/5th Sqn (pilot Prochev). It was shot down by Finnish fighters when attacking Immola airfield on 21 December 1939
This Tupolev SB 2M-100A with the tail number "1 Yellow" belonging to an unidentified unit was captured by the Germans in wrecked condition in the summer of 1941