Ahh, sorry. The aircraft type was designated TB-7 at the time. The 8 bombers (some sources say 14) from 432nd Heavy Bomber Air Regiment commanded by Colonel Lebedev took off from Pushkin (near Leningrad) on 10 Aug 1941. Only 5 TB-7s (some sources say 11) reached the target and bombed Berlin. The supercharged M-40 diesel engines were unreliable. The M-40 was liable to cut out at high altitude if the revolution rate of the engine was too low and the engine could be re-started only at about 1 500 meters. The one that forced-landed at Lapinjarvi, ran out of fuel. 7 TB-7s were lost during the raid.
Pentti
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