an upgraded tender which held nine long tons of coal and fitted with a corridor connection, so a change of driver and fireman could take place while the train is moving. By replenishing water from the water trough system several times en route, these modifications allowed the A1s to travel the without stopping. Flying Scotsman ran with its corridor tender until October 1936, after which it reverted to the original type. In 1938, it was paired with a streamlined non-corridor tender, and ran with this type until its withdrawal in 1963. On 30 November 1934, Flying Scotsman became the first steam locomotive to reach the officially authenticated speed of while hauling a light test train. It earned a place in the land speed record for railed vehicles, and the publicity-conscious LNER made much of the fact. Although the Great Western Railway's 3700 Class 3440 City of Truro was reported to have reached the same speed in 1904, the record was not official. In 1928, Gresley began to modify the A1s into an improved version, the Class A3. Flying Scotsman emerged as an A3 on 4 January 1947. Its old 180 psi boiler was replaced with a 225 psi version with the long "banjo" dome of the type it carries today, and was fitted with more efficient valves and cylinders. In December 1958, it was fitted with a double Kylchap chimney to improve performance and economy, but it caused soft exhaust and smoke drift that tended to obscure the driver's forward vision; the remedy was found in the German-type smoke deflectors fitted at the end of 1961. Following the success of Gresley's streamlined Class A4s, Flying Scotsman was no longer the LNER's flagship engine and was relegated to lesser duties, but still worked on the main line and hauling passenger services. In 1946, the locomotive was renumbered twice by Gresley's successor Edward Thompson, who devised a comprehensive renumbering scheme for the LNER. 4472 was initially assigned number 502 in January, but an amendment to the system led to its renumbering of 103 four months later. Following the nationalisation of Britain's railways on 1 January 1948, almost all of the LNER locomotive numbers were increased by 60000, and 103 became 60103 that December. On 4 June 1950, now under British Railways ownership, Flying Scotsman was allocated to its new base at Leicester Central on the Great Central Railway, running passenger services to