Back إليوشن دي بي-4 Arabic Iljuschin DB-4 German ایلیوشین دیبی-۴ Persian Ilyushin DB-4 ID DB-4 Polish Ilyushin DB-4 Portuguese ДБ-4 Russian Ilyushin DB-4 Vietnamese
| DB-4 | |
|---|---|
| Role | Long-range bomber |
| National origin | Soviet Union |
| Manufacturer | Ilyushin OKB |
| First flight | 15 October 1940 |
| Number built | 2 |
| Developed from | Ilyushin DB-3 |
The Ilyushin DB-4 (DB - Дальний бомбардировщик - Dalniy Bombardirovshchik - long-range bomber) or TsKB-56 (TsKB - Tsentral'noye Konstruktorskoye Byuro - central construction bureau) was a Soviet twin-engined bomber aircraft of the early 1940s. It was a development of the Ilyushin DB-3 and was intended as a replacement for the earlier aircraft, but only two prototypes were built; engine problems and the need to concentrate production on existing types following the German invasion of the Soviet Union in June 1941 meant that no more examples were built.