The M.3 Falcon was a clean, single engined low-wing monoplane with trousered main undercarriage and fixed tail-wheel, designed in 1934. It was structurally similar to the earlier Miles M.2F Hawk Major family, but had side-by-side seating for two behind the pilot in a glazed cockpit. It was powered by a 130 hp (97 kW) de Havilland Gipsy Major piston engine. The prototype, G-ACTM, built by Philips and Powis first flew at Woodley Aerodrome on 12 October 1934. The first production aircraft (designated M.3A Falcon Major) was flown in January 1935. It had a wider fuselage than the prototype to improve passenger comfort and revised glazing with a forward sloping windscreen. The M.3A was somewhat underpowered, so the (M.3B Falcon Six) and later versions were fitted with a 200 hp (150 kW) de Havilland Gipsy Six engine. The M.3C Falcon Six was a four seater with dual controls. The M.3D was strengthened to allow an 11% increase in all up weight compared with the M.3B. The final versions were the M.3E and M.3F. An enlarged five-seat version was developed as the M.4 Merlin. The prototype was fitted with extra fuel tanks and entered into the MacRobertson Race from England to Australia in October 1934. It took 27 days to reach Darwin, but returned in a record time of 7 days 19 hours 15 minutes, including one stage of 1,800 miles (2,900 km) non-stop from Jodhpur to Basra. Pre war, three Falcon Sixes appeared in RAF garb at the Royal Aircraft Establishment (RAE) for trials of a variety of wings and aerodynamic innovations. At the outbreak of the war three aircraft remained civilian as communications aircraft with various companies but, like so many civil aircraft ten others were impressed into service by the Royal Air Force, Royal Navy, the Royal Australian Air Force and the Swedish air force. The RAAF operated 3 Miles Falcons. Six Falcons survived the war, one of which was used by the RAE to test the wing of the Miles M.52. Variants M.3 Prototype three-seat version with a 130 hp de Havilland Gipsy Major engine. 1 built. M.3A Falcon Major Production four-seat version with a 130 hp de Havilland Gipsy Major engine. 18 built M.3B Falcon Six Three-seat version with a 200hp de Havilland Gipsy Six engine. 11 built, including 1 Falcon Six designated M.3, but not including 2 M.3Bs later converted to M.3E and F. M.3C Falcon Six Four-seater with dual controls with a 200 hp de Havilland Gipsy Six engine. 1 built. M.3D Strengthened variant with a 200 hp de Havilland Gipsy Six engine. 3 built. One was a converted M.3B. M.3E Variant with a 200 hp de Havilland Gipsy Six engine. 1 built but uncertified. M.3F A former M.3B modified for Fairey wing, spoiler and retractable aileron trials with the RAE, R4071.[5] Miles Gilette Falcon A single aircraft modified for the M.52 program.
