Modified Lancaster used in Dambusters raid

Date: 1943 Reference: AVIA 18/715 Creator: Ministry of Aviation and successors, the Air Registration Board, and related bodies Catalogue context: Lancaster aircraft: performance and handling trials Categories: Overseas; Second World War Subjects: Operation Chastise; Dambusters; Air Force; Armed Forces (General Administration); Research; Weapons Topics: Business, finance and innovation; Military and war Period: Second World War Copyright information: Copyright clearance for publication is not required, except in the case of documents in third-party copyright. Usage terms: https://www.nationalarchives.gov.uk/documents/information-management/use-of-tna-materials.pdf