Finally found info on unit and pilot of this IL-2 No.1 with white stripe: This plane belonged to st.lt. Ivan Ivanovich Andreev (1923-), deputy squadron commander of 15 VA, 225 ShAD, 810 ShAP:
http://allaces.ru/p/people.php?id=00000004166
Mechanics repair his plane after strafing attack on German tanks in the Mtsensk area.
Gabor