Tiger Moth R5172 was built by the de Havilland Aircraft Company and Hatfield and taken on charge by the RAF on 13 April 1940. After initial Mainenance Unit acceptance at RAF Llandow, she was transferred to No 9 Elementary Flying Training School at RAF Ansty in Warwickshire on 17 November 1940. She remained at Ansty until transferred to No 15 Elementary Flying Training School at RAF Carlisle during 1944, where she remained untill moved to No 22 Flying Training School at RAF Syerston in Nottinghamshire. Stored at RAF Lyneham between 1949 and 1951, R5172 joined RAF West Malling's Station Flight on 4 July 1951. Stored at RAF Cosford from November 1953, she was sold to Rollasons at Croydon during August 1954 and registered G-AOIS. After passing through the hands of a number of civillian owners, 'IS was purchased by Finest Hour in February 2022; she becomes the flagship aeroplane for Finest Hour's 2022 flying season and will also be flown in support of and in collaboration with the Thomas Castle Aviation Heritage Scholarship.