to tons from 1933) and was fitted with either an four-cylinder 5.1-litre diesel engine or an 80 hp four-cylinder 5.1-litre petrol engine. This was a robust and well-designed lorry, popular with both drivers and operators. The model was discontinued in the 1950s, although the name lived on into the 1970s in some export markets. TL 3513 (1934) KYE 402 (1949) Monarch Mk.I, models 641 (1930–33) and 647/648 (1933–35) - 4x2 cabover Monarch Mk.II, models 344/346/O346 (1935–47) - 4x2 cabover. There was also a normal-control version, model 244 (1935–40) Monarch Mk.III, models O345/3451 (1947–56) - 4x2 cabover Monarch, model TGM4 (see Mercury TGM4) Mustang The AEC Mustang model GM6 (1956–61) was a medium-weight, twin-steer ("Chinese six") 6x2 cabover, derived from the Mercury Dump Trucks From 1957 to 1971 AEC built a series of large off-road dump trucks: Model 3673M (1957–63) - 6x4 half-cab derived from Mammoth Major, with 10 cubic yard dump dumper capacity Model HDK4 (1959–65) - 4x4 normal-control with 18 cu/yd capacity Model DK6 (1961–62) - 6x4 or 6x6 semi-cabover derived from Militant, 10 cu/yd capacity. Model BDK6 (1964–71) - normal-control 6-wheeler, 10 cu/yd capacity. Based on Thornycroft design. Also sold as under the Leyland, Aveling Barford and Scammell brands Railcar engines Centenary celebrations 2012 was the centenary of the founding of AEC Ltd, and to mark this, a number of events took place throughout the year. By far the biggest was hosted by The AEC Society, and was held over the weekend of 26 and 27 May 2012 at Newark Showground in Nottinghamshire. It was the biggest ever gathering of AECs vehicles, and over 225 attended, as well as more than 350 vehicles of other marques. It was the biggest rally ever held by The AEC Society and was closed by a flypast by the Battle of Britain memorial flight. See also Hobart's Funnies Associated Equipment Company in World War 2 References External links AEC Society Remembering AEC The AEC Bus Site AEC Matador and Militant Owners Club The British/Portuguese UTIC AEC Coaches Page on ALSA's ACLO buses Home of a famous Militant Mk1 Catalogue of the AEC archives, held at the Modern Records Centre, University of Warwick Companies based in the London Borough of Ealing Defunct bus manufacturers of the United Kingdom Defunct truck manufacturers of the United Kingdom Former defence companies of the United Kingdom History of the London Borough of Ealing Leyland Motors Motor vehicle