The Avro Lancaster was a four-engineWorld War II bomber aircraft made initially by Avro for the British Royal Air Force (RAF). First used in 1942, together with the Handley-Page Halifax. It was the main heavy bomber of the RAF, the Royal Canadian Air Force, and squadrons from other Commonwealth and European countries serving with RAF Bomber Commmand
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The B.X was a Canadian-built B.III, differing in having Canadian/US made instrumentation and electronics. Also on later batches, the Martin 250CE was substituted for the Frazer Nash FN.50 mid upper turret. The greater weight of this turret necessitated moving the turret forward for balance reasons. Canada was a long term user of the Lancaster, utilising modified aircraft in Maritime Patrol, Search and Rescue and Photo Reconnaisance roles until 1963.
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