The Avro Lancaster was a British heavy bomber used during World War II. It was designed by the Avro company and first flew in 1941. Known for its distinctive four-engine design, the Lancaster was capable of carrying large bomb loads, including the famous Dam Busters bouncing bomb. It played a crucial role in the Allied bombing campaigns over Germany. With a wingspan of 31 meters, the Lancaster was one of the most effective bombers of the war. It could reach speeds of up to 460 km/h and had a range of approximately 2,500 kilometers. The aircraft was crewed by seven members, including a pilot, navigator, and bomb aimer.