1954年 5月轰炸航空兵独立第四团 ,完成了重型轰炸机杜四飞机的改装任务 ,全团十个机组在一年多的时间里 ,经过理论学习、飞行训练 ,全部达到了在四种气象条件下执行作战任务的水平。一个部队 ,所有机组在这样短的时间里 ,改装新型的飞机并同时完成全天候作战训练 ,这在空军建 In May 1954, the 4th Corps of the Air Force was bombed to complete the conversion task of the Du-4 aircraft of the heavy bomber. During the period of more than a year, all the 10 units of the entire regiment, after theoretical study and flight training, reached all the four meteorological conditions Under the level of operational mission. A unit, all units in such a short period of time, the conversion of new aircraft and at the same time to complete 24x7 combat training, which Air Force built