It was hoped that the machine could be introduced during the 1st May Day parade and in the training on her Test Pilot Kokkinaki conducted the aircraft over Frunzeho airport first one loop and then two more. On May 1, Ilyushin stood on the Red Square tribune and watched his creation fly over him. Even before CKB-26 landed, he was instructed to deprive him of the highest government officials. In the evening a column of black limousines appeared at the factory airport, one of which brought Stalin himself. The Soviet leader listened to the details of the development and features of the new bomber, then asked for a flight demonstration with higher pilotage features. Kokkinaki fulfilled his wishes with one hundred percent - showing a spectacular series of curves with great tilt, candles and spirals and finishing it with three loops.
Evidently, The aircraft made an impression on Stalin because he ordered to hasten the tests so that by the end of the summer the aircraft could enter serial production.
The publication describes the development and deployment of the bomber, Ilyushin Il-4 in World War II.